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Cheap flights from Ontario (ONT) to Washington, D.C. (WAS) from $90

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/14. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
ONT — WAS
May 8 — May 151
From?
To?
Wed 5/8
Wed 5/15
1 adult, Economy
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The best prices from Ontario to Washington, D.C. are usually found in January or February, booked 21 days in advance, depart on a Saturday or Wednesday and return on a Tuesday

Cheap flight deals from Ontario to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Washington, D.C. (WAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 3, 2024.

Popular in

June

Cheapest in

January

Round-trip from

$234

One-way from

$90
High demand for flights, 32% potential price rise
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Best time to find cheap flights, 47% potential price drop
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From Ontario to Washington, D.C. (WAS)
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One-way flight from Ontario to Washington, D.C. (WAS)
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What is the cheapest day to fly round-trip from Ontario to Washington, D.C.?

Flying to your destination on a Saturday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Washington, D.C.. Check prices with Cheapflights to find a great deal for your trip.

How far in advance should I book a flight from Ontario to Washington, D.C.?

Find a great deal and save up to 57% by booking at least 34 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Ontario to Washington, D.C. within the next two weeks, with the cheapest ticket starting at $379.

What is the cheapest month to fly from Ontario to Washington, D.C.?

The best pricing can be found in the month of February. Prices to Washington, D.C. from Ontario average $364. You can even find prices in February for less than $364, as users have found deals to Washington, D.C. from as low as $100. The month of June appears to be one of the more expensive times to travel to Washington, D.C. from Ontario. Flying in the targeted month can save you up to 28%.

When is the cheapest time to fly from Ontario to Washington, D.C. (ONT - WAS)?

It’s typically best to fly out from Ontario to Washington, D.C. in the afternoon. Doing so could potentially save you 40% on the flight price compared to flying at noon, which is usually more expensive.

Cheap United Airlines flights from Ontario to Washington, D.C.

Explore cheap flight options specifically provided by United Airlines for the route between Ontario and Washington, D.C.. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,899,487 searches. Data last updated May 3, 2024.
Consider these cheap United Airlines flights we've found departing from Ontario to Washington, D.C.. Deals update often to give you more flight options matching your criteria
Fri 5/246:25 pmONT - IAD
1 stop8h 00mUnited Airlines
Wed 5/292:23 pmIAD - ONT
1 stop11h 06mUnited Airlines
Deal found 5/1$339
Thu 8/16:25 pmONT - IAD
1 stop8h 00mUnited Airlines
Thu 8/87:01 amIAD - ONT
1 stop8h 14mUnited Airlines
Deal found 5/1$346
Thu 8/16:00 amONT - DCA
1 stop9h 32mUnited Airlines
Thu 8/82:59 pmDCA - ONT
1 stop9h 12mUnited Airlines
Deal found 5/1$370
Sun 5/265:55 amONT - IAD
1 stop7h 25mUnited Airlines
Tue 6/47:00 amIAD - ONT
1 stop8h 45mUnited Airlines
Deal found 5/2$389
Wed 5/296:25 pmONT - IAD
1 stop8h 00mUnited Airlines
Sat 6/17:00 amIAD - ONT
1 stop8h 25mUnited Airlines
Deal found 5/2$390
Sun 5/265:55 amONT - IAD
1 stop7h 25mUnited Airlines
Tue 6/47:00 amIAD - ONT
1 stop8h 45mUnited Airlines
Deal found 5/2$391
Sat 5/181:36 pmONT - IAD
1 stop6h 38mUnited Airlines
Wed 6/57:00 amIAD - ONT
1 stop8h 45mUnited Airlines
Deal found 5/2$459
Tue 5/141:36 pmONT - IAD
1 stop6h 38mUnited Airlines
Sat 5/182:35 pmIAD - ONT
1 stop9h 18mUnited Airlines
Deal found 5/2$566
Wed 10/91:30 pmONT - IAD
1 stop6h 29mUnited Airlines
Mon 10/1410:09 pmIAD - ONT
2 stops22h 08mUnited Airlines
Deal found 5/2$570

Cheap Alaska Airlines flights from Ontario to Washington, D.C.

Explore cheap flight options specifically provided by Alaska Airlines for the route between Ontario and Washington, D.C.. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,899,487 searches. Data last updated May 3, 2024.
To aid your search, here are some of the cheapest Alaska Airlines flights we've found from Ontario to Washington, D.C.. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.
Thu 5/3010:00 amONT - IAD
1 stop10h 59mAlaska Airlines
Sun 6/27:00 amIAD - ONT
1 stop11h 26mAlaska Airlines
Deal found 5/1$516
Tue 6/410:00 amONT - IAD
1 stop10h 59mAlaska Airlines
Thu 6/69:05 amIAD - ONT
1 stop9h 21mAlaska Airlines
Deal found 5/2$580
Tue 5/75:00 pmONT - BWI
1 stop9h 50mAlaska Airlines
Sun 5/267:05 amBWI - ONT
1 stop11h 21mAlaska Airlines
Deal found 5/1$633
Fri 5/1010:29 amONT - IAD
1 stop10h 30mAlaska Airlines
Thu 5/167:00 amIAD - ONT
1 stop19h 58mAlaska Airlines
Deal found 5/2$649
Fri 5/1010:29 amONT - IAD
1 stop10h 30mAlaska Airlines
Wed 5/157:40 amIAD - ONT
1 stop11h 25mAlaska Airlines
Deal found 5/2$656
Tue 5/75:00 pmONT - BWI
1 stop9h 50mAlaska Airlines
Fri 6/77:05 amBWI - ONT
1 stop19h 53mAlaska Airlines
Deal found 5/2$672

Cheap Ontario to Washington, D.C. flights in May & June 2024

Find cheap flight options from Ontario to Washington, D.C. specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,899,487 searches. Prices were last updated on May 3, 2024.
These are some of the most attractive deals on flights from Ontario to Washington, D.C. in 2024. If these deals don't appeal to you, be sure to come back soon for more options.
Tue 5/2812:59 amONT - BWI
1 stop15h 43mFrontier
Tue 6/118:48 pmBWI - ONT
1 stop13h 14mFrontier
Deal found 5/2$179
Tue 5/212:25 pmONT - BWI
1 stop26h 17mFrontier
Wed 6/57:09 pmBWI - ONT
2 stops14h 54mFrontier
Deal found 5/1$183
Mon 6/1012:59 amONT - BWI
1 stop15h 46mFrontier
Tue 6/258:48 pmBWI - ONT
1 stop13h 14mFrontier
Deal found 5/1$188
Fri 5/3112:59 amONT - BWI
1 stop14h 00mFrontier
Tue 6/118:48 pmBWI - ONT
1 stop13h 14mFrontier
Deal found 5/2$190
Sun 5/2612:59 amONT - BWI
1 stop7h 34mFrontier
Wed 6/57:09 pmBWI - ONT
2 stops14h 54mFrontier
Deal found 5/1$199
Tue 5/147:16 amONT - BWI
1 stop25h 13mFrontier
Sat 5/186:46 pmBWI - ONT
1 stop8h 13mFrontier
Deal found 5/2$206
Tue 5/1412:59 amONT - BWI
1 stop7h 30mFrontier
Fri 5/1712:33 pmBWI - ONT
1 stop14h 26mFrontier
Deal found 5/1$207
Tue 5/147:16 amONT - BWI
2 stops29h 00mFrontier
Sat 5/186:46 pmBWI - ONT
1 stop8h 13mFrontier
Deal found 5/2$211
Sun 5/2612:59 amONT - BWI
1 stop7h 34mFrontier
Thu 6/61:39 pmBWI - ONT
1 stop13h 05mFrontier
Deal found 5/1$212

Ontario to Washington, D.C. 2024 flight deals

Discover exclusive flight deals for travel between Ontario and Washington, D.C. in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,899,487 searches. Data last updated May 3, 2024.
These are some of the most attractive deals on flights from Ontario to Washington, D.C. in 2024. If these deals don't appeal to you, be sure to come back soon for more options.
Tue 8/131:32 pmONT - BWI
1 stop19h 31mFrontier
Sat 8/171:03 pmBWI - ONT
1 stop13h 41mFrontier
Deal found 5/1$178
Tue 5/2812:59 amONT - BWI
1 stop15h 43mFrontier
Tue 6/118:48 pmBWI - ONT
1 stop13h 14mFrontier
Deal found 5/2$179
Tue 5/212:25 pmONT - BWI
1 stop26h 17mFrontier
Wed 6/57:09 pmBWI - ONT
2 stops14h 54mFrontier
Deal found 5/1$183
Mon 6/1012:59 amONT - BWI
1 stop15h 46mFrontier
Tue 6/258:48 pmBWI - ONT
1 stop13h 14mFrontier
Deal found 5/1$188
Fri 5/3112:59 amONT - BWI
1 stop14h 00mFrontier
Tue 6/118:48 pmBWI - ONT
1 stop13h 14mFrontier
Deal found 5/2$190
Sun 5/2612:59 amONT - BWI
1 stop7h 34mFrontier
Wed 6/57:09 pmBWI - ONT
2 stops14h 54mFrontier
Deal found 5/1$199
Tue 7/28:29 amONT - BWI
1 stop8h 16mFrontier
Wed 7/101:03 pmBWI - ONT
1 stop9h 34mFrontier
Deal found 5/2$200
Tue 8/2712:49 amONT - BWI
1 stop8h 14mFrontier
Wed 9/119:41 pmBWI - ONT
1 stop11h 26mFrontier
Deal found 5/2$203
Fri 8/3012:49 amONT - BWI
1 stop8h 14mFrontier
Wed 9/119:41 pmBWI - ONT
1 stop11h 26mFrontier
Deal found 5/2$204

Ontario to Washington, D.C. flights leaving soon

Find last-minute flight options from Ontario to Washington, D.C. for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,899,487 searches. Data last updated May 3, 2024.
Check out these flights departing soon from Ontario to Washington, D.C.. Users should examine the flight details to ensure there are no surprises.
Tue 5/712:59 amONT - BWI
1 stop7h 30mFrontier
Wed 5/1512:29 pmBWI - ONT
1 stop14h 30mFrontier
Deal found 5/2$217
Tue 5/712:59 amONT - BWI
2 stops11h 17mFrontier
Wed 5/1512:29 pmBWI - ONT
1 stop14h 30mFrontier
Deal found 5/2$222
Thu 5/912:56 amONT - BWI
1 stop7h 33mFrontier
Wed 5/1512:29 pmBWI - ONT
1 stop14h 30mFrontier
Deal found 5/2$226
Thu 5/97:16 amONT - BWI
1 stop25h 13mFrontier
Sat 5/111:00 pmBWI - ONT
1 stop20h 31mFrontier
Deal found 5/2$227
Sun 5/1212:59 amONT - BWI
1 stop8h 01mFrontier
Wed 5/1512:29 pmBWI - ONT
1 stop14h 30mFrontier
Deal found 5/2$232
Fri 5/1012:55 amONT - BWI
1 stop8h 05mFrontier
Sat 5/186:46 pmBWI - ONT
1 stop8h 13mFrontier
Deal found 5/1$234
Wed 5/812:59 amONT - DCA
1 stop8h 01mFrontier
Wed 5/157:00 amDCA - ONT
1 stop19h 59mFrontier
Deal found 5/2$234
Wed 5/87:26 amONT - DCA
1 stop25h 34mFrontier
Fri 5/107:00 amDCA - ONT
1 stop26h 26mFrontier
Deal found 5/2$236
Fri 5/1012:55 amONT - BWI
1 stop8h 05mFrontier
Fri 5/1712:33 pmBWI - ONT
1 stop14h 26mFrontier
Deal found 5/1$239

One-way flights to Washington, D.C. from Ontario

Search for one-way flight options from Ontario to Washington, D.C.. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,899,487 searches. Data last updated May 3, 2024.
Some of the best available deals we've found on one-way flights from Ontario to Washington, D.C.. Users in need of a round-trip flight from Ontario to Washington, D.C. instead should update the search form at the top of page.
Tue 5/1412:59 amONT - BWI
1 stop7h 30mFrontier
Deal found 5/2$90
Wed 6/58:02 pmONT - BWI
1 stop10h 06mFrontier
Deal found 5/2$95
Tue 6/188:29 amONT - BWI
1 stop8h 16mFrontier
Deal found 5/2$100
Fri 5/3112:59 amONT - BWI
1 stop14h 00mFrontier
Deal found 5/2$102
Sun 5/2612:59 amONT - BWI
1 stop7h 34mFrontier
Deal found 5/2$104
Fri 5/3112:59 amONT - DCA
1 stop8h 04mFrontier
Deal found 5/2$108
Thu 5/912:56 amONT - BWI
1 stop7h 33mFrontier
Deal found 5/2$109
Tue 5/1412:59 amONT - DCA
1 stop8h 01mFrontier
Deal found 5/2$109
Mon 6/1712:59 amONT - BWI
1 stop15h 46mFrontier
Deal found 5/2$110

Find flights from Ontario to Washington, D.C. within your budget

Customize your flight search to find flights from Ontario to Washington, D.C. that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,899,487 searches. Data last updated May 3, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$178 - $364

Route

Depart

Return

Price

OntarioBaltimore/Washington

ONT - BWI

ONTBWI

Ontario

Tue 8/13

1 stop19h 31m

Baltimore/Washington

Sat 8/17

1 stop13h 41m

$178

OntarioBaltimore/Washington

ONT - BWI

ONTBWI

Ontario

Tue 5/28

1 stop15h 43m

Baltimore/Washington

Tue 6/11

1 stop13h 14m

$179

OntarioBaltimore/Washington

ONT - BWI

ONTBWI

Ontario

Tue 5/21

1 stop26h 17m

Baltimore/Washington

Wed 6/5

2 stops14h 54m

$183

OntarioBaltimore/Washington

ONT - BWI

ONTBWI

Ontario

Mon 6/10

1 stop15h 46m

Baltimore/Washington

Tue 6/25

1 stop13h 14m

$188

OntarioBaltimore/Washington

ONT - BWI

ONTBWI

Ontario

Fri 5/31

1 stop14h 00m

Baltimore/Washington

Tue 6/11

1 stop13h 14m

$190

OntarioWashington, D.C. Dulles Intl

ONT - IAD

ONTIAD

Ontario

Sat 9/28

1 stop6h 36m

Washington, D.C. Dulles Intl

Tue 10/1

1 stop7h 29m

$287

OntarioWashington, D.C. Dulles Intl

ONT - IAD

ONTIAD

Ontario

Tue 6/4

1 stop8h 44m

Washington, D.C. Dulles Intl

Fri 6/14

1 stop7h 20m

$290

OntarioWashington, D.C. Dulles Intl

ONT - IAD

ONTIAD

Ontario

Fri 5/24

1 stop8h 00m

Washington, D.C. Dulles Intl

Wed 5/29

1 stop11h 06m

$339

OntarioBaltimore/Washington

ONT - BWI

ONTBWI

Ontario

Wed 9/18

1 stop10h 09m

Baltimore/Washington

Sat 9/21

1 stop13h 41m

$364

Flights are sorted by cheapest first

Deals found on 5/1

When is the best time to book a flight from Ontario to Washington, D.C.?

Use this chart to determine the optimal time to book a round-trip flight from Ontario to Washington, D.C.. Price data was last updated on January 28, 2024.
The price you pay for your flight from Ontario to Washington, D.C. may vary depending on when you book. For the best chance of a lower fare, look to book 21 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
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When is the cheapest time to fly from Ontario to Washington, D.C.?

Use this chart to determine the cheapest time to fly round-trip from Ontario to Washington, D.C.. Price data was last updated on April 28, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Ontario to Washington, D.C. flight should consider departing on Friday afternoons when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
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Average price of flights to Washington, D.C. by month

Plan your trip from Ontario to Washington, D.C. by taking into account the cheapest months to travel. The average price of a one-way flight from Ontario to Washington, D.C. is currently $103 while a round-trip flight costs $244. Price data was last updated on April 28, 2024.

Currently, September is the cheapest month in which you can book a flight from Ontario to Washington, D.C. (average of $281). Flying from Ontario to Washington, D.C. in June is currently the most expensive (average of $398). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

January

$308

February

$303

March

$358

April

$337

May

$337

June

$398

July

$378

August

$296

September

$281

October

$303

November

$328

December

$291

Temperature and rainfall in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature and rainfall totals by month.

WAS

Temperature

35.6 - 80.6 °F

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington, D.C.. Reviews last updated May 3, 2024.
Get a feel of what it's like to fly with United Airlines, Alaska Airlines and Delta from Ontario to Washington, D.C. by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.2
Very good
6,108 reviews
Check prices

Food

7.3

Boarding

8.3

Entertainment

7.8

Overall

8.2

Crew

8.7

Comfort

8.1

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

Southwest
8.2
Very good
6,108 reviews
Southwest
8.2
Very good
6,108 reviews
Check prices

Food

7.3

Boarding

8.3

Entertainment

7.8

Overall

8.2

Crew

8.7

Comfort

8.1

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

Alaska Airlines
8.1
Very good
9,123 reviews
Southwest
8.2
Very good
6,108 reviews
Check prices

Food

7.3

Boarding

8.3

Entertainment

7.8

Overall

8.2

Crew

8.7

Comfort

8.1

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

Delta
8.1
Very good
10,858 reviews
Southwest
8.2
Very good
6,108 reviews
Check prices

Food

7.3

Boarding

8.3

Entertainment

7.8

Overall

8.2

Crew

8.7

Comfort

8.1

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

Avianca
7.5
Good
3,876 reviews
Southwest
8.2
Very good
6,108 reviews
Check prices

Food

7.3

Boarding

8.3

Entertainment

7.8

Overall

8.2

Crew

8.7

Comfort

8.1

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

American Airlines
7.3
Good
14,767 reviews
Southwest
8.2
Very good
6,108 reviews
Check prices

Food

7.3

Boarding

8.3

Entertainment

7.8

Overall

8.2

Crew

8.7

Comfort

8.1

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Washington, D.C.. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Washington, D.C.?

    If you book a flight to Washington, D.C. from Ontario, you will be flying from Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario. There are 0 flights from Ontario to Washington, D.C. per day from 6 different airlines.

  • Can I find flights from Ontario to Washington, D.C. for under $200 on Cheapflights?

    Yes, there are multiple flights from Ontario to Washington, D.C. for under $200. The cheapest flight booked recently is on Frontier for just $178, but on average you can expect to pay $202.

  • Are there last-minute flights available from Ontario to Washington, D.C. for under $300?

    There are currently 20+ open flights from Ontario to Washington, D.C. within the next 7 days for less than $300.

  • What is the cheapest airline to fly from Ontario to Washington, D.C. round-trip?

    Cheapflights users have booked flights from Ontario to Washington, D.C. round-trip from $178. Users have found that Frontier is 51% cheaper than the other options available to this destination.

  • What are the most popular routes from Ontario to Washington, D.C.?

    When deciding which route to take from Ontario to Washington, D.C. consider Ontario - Washington, D.C. Reagan-National, Ontario - Washington, D.C. Dulles Intl or Ontario - Baltimore/Washington as they are the most popular.

  • What are the most popular airlines that fly from Ontario to Washington, D.C.?

    The most popular airlines flying from Ontario to Washington, D.C. are American Airlines, Alaska Airlines and Delta. Something to consider prior to booking your flight.

  • What does ONT to IAD mean?

    These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Ontario Airport to Washington, D.C. Dulles Intl Airport flight would often be abbreviated as a ONT to IAD flight. Baltimore/Washington Airport (BWI), Washington, D.C. Reagan-National Airport (DCA) are some additional IATA codes for airports related to your trip.

  • Can I find deals for flights from Ontario to Washington, D.C. that include extra baggage allowance?

    The amount of baggage you can bring on your Ontario to Washington, D.C. flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Ontario to Washington, D.C. with specific airlines?

    Yes, Cheapflights allows you to browse and filter Ontario to Washington, D.C. flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Ontario to Washington, D.C. that include hotel bookings?

    Yes. In addition to deals on Ontario to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Washington, D.C.?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Washington, D.C..

  • Can I find deals for business class flights from Ontario to Washington, D.C.?

    Yes. Cheapflights offers flight deals from Ontario to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Ontario to Washington, D.C. that allow pets onboard?

    Many airlines flying from Ontario to Washington, D.C. offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Ontario to Washington, D.C.?

    Yes, you can often find last-minute deals on Ontario to Washington, D.C. flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Ontario to Washington, D.C. flight deals updated?

    The Ontario to Washington, D.C. flight deals you see on this page were last updated on 5/2.

See more FAQs

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Alternative routes for Ontario to Washington, D.C.
See prices for flight routes from nearby airports that may be better suited for you.

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Redding to Reagan-National flights

Top 6 airlines flying from Ontario to Washington, D.C.

Discover the top 6 airlines that operate flights from Ontario to Washington, D.C.. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,899,487 searches. Data last updated May 3, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$123Average$250FlexibilityNo cancel feeOn-time65%
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Alaska AirlinesCheapest$133Average$305FlexibilityNo cancel feeOn-time75%
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FrontierCheapest$148Average$272FlexibilityNo cancel feeOn-time62%
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United AirlinesCheapest$186Average$572FlexibilityNo cancel feeOn-time69%
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American AirlinesCheapest$194Average$505FlexibilityNo cancel feeOn-time71%
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DeltaCheapest$256Average$435FlexibilityNo cancel feeOn-timeN/A
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Search flights from Ontario to Washington, D.C. by cabin class

Find flights from Ontario to Washington, D.C., based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Weekly flight availability from Ontario to Washington, D.C.

Explore weekly flight availability from Ontario to Washington, D.C.. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated May 3, 2024.
Sunday0daily flights
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Fly with Cheapflights

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How does Cheapflights help users find flights from Ontario to Washington, D.C.?

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Why should you use Cheapflights to find cheap flight tickets from Ontario to Washington, D.C.?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Ontario to Washington, D.C. for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Ontario to Washington, D.C. with no change fees?

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Can Cheapflights notify me if prices for flights from Ontario to Washington, D.C. become cheaper?

Yes, Cheapflights offers price alerts on Ontario to Washington, D.C. flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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