What are the cheapest airlines flying from Ontario to Washington, D.C. round-trip?

Cheapflights users have booked flights from Ontario to Washington, D.C. round-trip from $217. Other airlines that can offer you cheap pricing are Frontier, from $248, and American Airlines, from $256. Users have found that Undisclosed Carrier is 52% cheaper than the other options available to this destination.

What are the cheapest airlines to fly from Ontario to Washington, D.C. one-way?

For one-way options, check prices for Undisclosed Carrier. According to our data, you can fly for as low as $86. Users have also found prices from $112 and $128 on Frontier and American Airlines, respectively.

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 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. Dulles Intl, Ontario - Washington, D.C. Reagan-National or Ontario - Baltimore/Washington as they are the most popular.

Can I find flights from Ontario to Washington, D.C. for under $300 on Cheapflights?

Yes, there are multiple flights from Ontario to Washington, D.C. for under $300. The cheapest flight booked recently is on Undisclosed Carrier for just $217, but on average you can expect to pay $258.

Are there nonstop flights from Ontario to Washington, D.C. for under $400 on Cheapflights?

Cheapflights has at least 20 direct flights from Ontario to Washington, D.C. under $400. A good price for a nonstop flight from Ontario to Washington, D.C. is less than $485.

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.

Which airlines flying from Ontario to Washington, D.C. have flexible cancellations due to COVID-19?

Due to the rapidly changing circumstances due to COVID-19, airlines like American Airlines, Frontier, and Delta flying from Ontario to Washington, D.C. have implemented new flexible cancellation policies.

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 39% by booking at least 36 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 $518.

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 $448. You can even find prices in February for less than $448, as users have found deals to Washington, D.C. from as low as $159. 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 45%.

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 morning. Doing so could potentially save you 34% on the flight price compared to flying in the evening, which is usually more expensive.

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 5 different airlines.

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. Washington, D.C. Reagan-National Airport (DCA) are some additional IATA codes for airports related to your trip.

Flights from Ontario, CA to Washington, D.C., DC from $86

How to find the cheapest flight from Ontario (ONT) to Washington, D.C. (WAS)

Popular in	June
Cheapest in	February
Round-trip from	$276
One-way from	$134

High demand for flights, 34% potential price rise

Search Deals

Best time to find cheap flights, 40% potential price drop

Search Deals

From Ontario to Washington, D.C. (WAS)

Search Deals

One-way flight from Ontario to Washington, D.C. (WAS)

Search Deals

ONT - WAS Price	$276 - $700
WAS Temperature	35.6 - 80.6 °F
WAS Rainfall	2.6 - 4 inches

ONT - WAS

Price

$276 - $700

WAS

Temperature

35.6 - 80.6 °F

WAS

Rainfall

2.6 - 4 inches

Cheap flights from Ontario to Washington, D.C. in May, June 2023

These are some of the most attractive deals on flights from Ontario to Washington, D.C. in 2023. If these deals don't appeal to you, be sure to come back soon for more options.

Jun 8 - Jun 12

ONT

Ontario

DCA

Washington, D.C. Reagan-National

1 stop

8h 54m

DCA

Washington, D.C. Reagan-National

ONT

Ontario

1 stop

8h 43m

$242

Undisclosed Carrier

Deal found 5/24

Jun 18 - Jun 20

ONT

Ontario

DCA

Washington, D.C. Reagan-National

1 stop

13h 44m

DCA

Washington, D.C. Reagan-National

ONT

Ontario

1 stop

8h 11m

$249

Undisclosed Carrier

Deal found 5/24

Jun 21 - Jun 23

ONT

Ontario

DCA

Washington, D.C. Reagan-National

1 stop

9h 41m

DCA

Washington, D.C. Reagan-National

ONT

Ontario

1 stop

8h 10m

$269

Undisclosed Carrier

Deal found 5/25

Jun 7 - Jun 12

ONT

Ontario

BWI

Baltimore/Washington

2 stops

29h 23m

BWI

Baltimore/Washington

ONT

Ontario

1 stop

15h 51m

$271

Multiple Airlines

Deal found 5/24

Jun 21 - Jun 28

ONT

Ontario

BWI

Baltimore/Washington

2 stops

29h 31m

BWI

Baltimore/Washington

ONT

Ontario

1 stop

7h 48m

$287

Multiple Airlines

Deal found 5/24

Jun 23 - Jun 27

ONT

Ontario

BWI

Baltimore/Washington

1 stop

18h 50m

BWI

Baltimore/Washington

ONT

Ontario

1 stop

7h 50m

$288

Frontier

Deal found 5/24

May 31 - Jun 7

ONT

Ontario

BWI

Baltimore/Washington

2 stops

19h 35m

BWI

Baltimore/Washington

ONT

Ontario

2 stops

26h 14m

$290

Undisclosed Carrier

Deal found 5/25

Jun 5 - Jun 11

ONT

Ontario

BWI

Baltimore/Washington

2 stops

24h 32m

BWI

Baltimore/Washington

ONT

Ontario

1 stop

25h 21m

$293

Frontier

Deal found 5/24

Jun 5 - Jun 11

ONT

Ontario

BWI

Baltimore/Washington

2 stops

44h 03m

BWI

Baltimore/Washington

ONT

Ontario

3 stops

46h 11m

$294

Undisclosed Carrier

Deal found 5/24

Ontario to Washington, D.C. 2023 flight deals

These are some of the most attractive deals on flights from Ontario to Washington, D.C. in 2023. If these deals don't appeal to you, be sure to come back soon for more options.

Sep 5 - Sep 10

ONT

Ontario

DCA

Washington, D.C. Reagan-National

1 stop

8h 23m

DCA

Washington, D.C. Reagan-National

ONT

Ontario

1 stop

9h 20m

$217

Undisclosed Carrier

Deal found 5/24

Sep 13 - Sep 20

ONT

Ontario

BWI

Baltimore/Washington

1 stop

19h 20m

BWI

Baltimore/Washington

ONT

Ontario

1 stop

8h 21m

$223

Multiple Airlines

Deal found 5/24

Jun 8 - Jun 12

ONT

Ontario

DCA

Washington, D.C. Reagan-National

1 stop

8h 54m

DCA

Washington, D.C. Reagan-National

ONT

Ontario

1 stop

8h 43m

$242

Undisclosed Carrier

Deal found 5/24

Aug 15 - Aug 16

ONT

Ontario

BWI

Baltimore/Washington

1 stop

8h 47m

BWI

Baltimore/Washington

ONT

Ontario

1 stop

10h 52m

$248

Frontier

Deal found 5/24

Jun 18 - Jun 20

ONT

Ontario

DCA

Washington, D.C. Reagan-National

1 stop

13h 44m

DCA

Washington, D.C. Reagan-National

ONT

Ontario

1 stop

8h 11m

$249

Undisclosed Carrier

Deal found 5/24

Sep 28 - Oct 2

ONT

Ontario

DCA

Washington, D.C. Reagan-National

1 stop

6h 41m

DCA

Washington, D.C. Reagan-National

ONT

Ontario

1 stop

8h 24m

$256

American Airlines

Deal found 5/24

Sep 6 - Sep 14

ONT

Ontario

IAD

Washington, D.C. Dulles Intl

1 stop

8h 55m

IAD

Washington, D.C. Dulles Intl

ONT

Ontario

1 stop

6h 57m

$256

American Airlines

Deal found 5/25

Aug 14 - Aug 17

ONT

Ontario

DCA

Washington, D.C. Reagan-National

1 stop

9h 37m

DCA

Washington, D.C. Reagan-National

ONT

Ontario

1 stop

8h 35m

$257

American Airlines

Deal found 5/24

Sep 7 - Sep 13

ONT

Ontario

IAD

Washington, D.C. Dulles Intl

1 stop

8h 55m

IAD

Washington, D.C. Dulles Intl

ONT

Ontario

1 stop

8h 41m

$257

American Airlines

Deal found 5/25

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

Consider these cheap American Airlines flights we've found departing from Ontario to Washington, D.C.. Deals update often to give you more flight options matching your criteria

Sep 6 - Sep 14

ONT

Ontario

IAD

Washington, D.C. Dulles Intl

1 stop

8h 55m

IAD

Washington, D.C. Dulles Intl

ONT

Ontario

1 stop

6h 57m

$256

American Airlines

Deal found 5/25

Sep 7 - Sep 13

ONT

Ontario

IAD

Washington, D.C. Dulles Intl

1 stop

8h 55m

IAD

Washington, D.C. Dulles Intl

ONT

Ontario

1 stop

8h 41m

$257

American Airlines

Deal found 5/25

Oct 7 - Oct 14

ONT

Ontario

IAD

Washington, D.C. Dulles Intl

1 stop

8h 49m

IAD

Washington, D.C. Dulles Intl

ONT

Ontario

1 stop

9h 03m

$259

American Airlines

Deal found 5/25

Sep 7 - Sep 13

ONT

Ontario

IAD

Washington, D.C. Dulles Intl

1 stop

8h 55m

IAD

Washington, D.C. Dulles Intl

ONT

Ontario

2 stops

10h 49m

$261

American Airlines

Deal found 5/25

Sep 6 - Sep 14

ONT

Ontario

IAD

Washington, D.C. Dulles Intl

2 stops

10h 36m

IAD

Washington, D.C. Dulles Intl

ONT

Ontario

1 stop

6h 57m

$262

American Airlines

Deal found 5/25

Sep 7 - Sep 13

ONT

Ontario

IAD

Washington, D.C. Dulles Intl

2 stops

10h 36m

IAD

Washington, D.C. Dulles Intl

ONT

Ontario

2 stops

10h 49m

$267

American Airlines

Deal found 5/25

Aug 18 - Aug 21

ONT

Ontario

IAD

Washington, D.C. Dulles Intl

1 stop

7h 19m

IAD

Washington, D.C. Dulles Intl

ONT

Ontario

1 stop

8h 23m

$286

American Airlines

Deal found 5/24

Aug 15 - Aug 16

ONT

Ontario

IAD

Washington, D.C. Dulles Intl

1 stop

7h 22m

IAD

Washington, D.C. Dulles Intl

ONT

Ontario

1 stop

9h 38m

$288

American Airlines

Deal found 5/24

Aug 18 - Aug 21

ONT

Ontario

DCA

Washington, D.C. Reagan-National

1 stop

7h 47m

DCA

Washington, D.C. Reagan-National

ONT

Ontario

2 stops

9h 20m

$290

American Airlines

Deal found 5/24

Cheap Undisclosed Carrier flights from Ontario to Washington, D.C.

To aid your search, here are some of the cheapest Undisclosed Carrier 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.

Sep 5 - Sep 10

ONT

Ontario

DCA

Washington, D.C. Reagan-National

1 stop

8h 23m

DCA

Washington, D.C. Reagan-National

ONT

Ontario

1 stop

9h 20m

$217

Undisclosed Carrier

Deal found 5/24

Jun 8 - Jun 12

ONT

Ontario

DCA

Washington, D.C. Reagan-National

1 stop

8h 54m

DCA

Washington, D.C. Reagan-National

ONT

Ontario

1 stop

8h 43m

$242

Undisclosed Carrier

Deal found 5/24

Jun 18 - Jun 20

ONT

Ontario

DCA

Washington, D.C. Reagan-National

1 stop

13h 44m

DCA

Washington, D.C. Reagan-National

ONT

Ontario

1 stop

8h 11m

$249

Undisclosed Carrier

Deal found 5/24

Jun 21 - Jun 23

ONT

Ontario

DCA

Washington, D.C. Reagan-National

1 stop

9h 41m

DCA

Washington, D.C. Reagan-National

ONT

Ontario

1 stop

8h 10m

$269

Undisclosed Carrier

Deal found 5/25

Oct 30 - Nov 5

ONT

Ontario

BWI

Baltimore/Washington

1 stop

11h 24m

BWI

Baltimore/Washington

ONT

Ontario

1 stop

17h 43m

$286

Undisclosed Carrier

Deal found 5/24

May 31 - Jun 7

ONT

Ontario

BWI

Baltimore/Washington

2 stops

19h 35m

BWI

Baltimore/Washington

ONT

Ontario

2 stops

26h 14m

$290

Undisclosed Carrier

Deal found 5/25

Jun 5 - Jun 11

ONT

Ontario

BWI

Baltimore/Washington

2 stops

44h 03m

BWI

Baltimore/Washington

ONT

Ontario

3 stops

46h 11m

$294

Undisclosed Carrier

Deal found 5/24

Aug 22 - Aug 24

ONT

Ontario

DCA

Washington, D.C. Reagan-National

1 stop

8h 55m

DCA

Washington, D.C. Reagan-National

ONT

Ontario

1 stop

24h 42m

$298

Undisclosed Carrier

Deal found 5/24

Jul 12 - Jul 18

ONT

Ontario

DCA

Washington, D.C. Reagan-National

1 stop

9h 46m

DCA

Washington, D.C. Reagan-National

ONT

Ontario

1 stop

8h 04m

$299

Undisclosed Carrier

Deal found 5/24

Non-stop flights to Washington, D.C. from Ontario

Consider booking one of these non-stop flights heading from Ontario to Washington, D.C.. If you're looking for other options for flights from Ontario to Washington, D.C., make sure to update the search form at the top of page.

Sep 13 - Sep 20

ONT

Ontario

IAD

Washington, D.C. Dulles Intl

Nonstop

1h 28m

IAD

Washington, D.C. Dulles Intl

ONT

Ontario

Nonstop

7h 28m

$373

Undisclosed Carrier

Deal found 5/24

Sep 7 - Sep 13

ONT

Ontario

IAD

Washington, D.C. Dulles Intl

Nonstop

1h 28m

IAD

Washington, D.C. Dulles Intl

ONT

Ontario

Nonstop

7h 28m

$381

Undisclosed Carrier

Deal found 5/25

Sep 29 - Oct 2

ONT

Ontario

IAD

Washington, D.C. Dulles Intl

Nonstop

1h 28m

IAD

Washington, D.C. Dulles Intl

ONT

Ontario

Nonstop

7h 28m

$426

Undisclosed Carrier

Deal found 5/24

Sep 28 - Oct 2

ONT

Ontario

IAD

Washington, D.C. Dulles Intl

Nonstop

1h 28m

IAD

Washington, D.C. Dulles Intl

ONT

Ontario

Nonstop

7h 28m

$446

Undisclosed Carrier

Deal found 5/24

Sep 28 - Oct 2

ONT

Ontario

IAD

Washington, D.C. Dulles Intl

Nonstop

1h 28m

IAD

Washington, D.C. Dulles Intl

ONT

Ontario

Nonstop

7h 28m

$451

Undisclosed Carrier

Deal found 5/24

Sep 21 - Sep 25

ONT

Ontario

IAD

Washington, D.C. Dulles Intl

Nonstop

1h 28m

IAD

Washington, D.C. Dulles Intl

ONT

Ontario

Nonstop

7h 28m

$456

Undisclosed Carrier

Deal found 5/24

Oct 18 - Oct 22

ONT

Ontario

IAD

Washington, D.C. Dulles Intl

Nonstop

1h 28m

IAD

Washington, D.C. Dulles Intl

ONT

Ontario

Nonstop

7h 28m

$465

Undisclosed Carrier

Deal found 5/25

Sep 6 - Sep 14

ONT

Ontario

IAD

Washington, D.C. Dulles Intl

Nonstop

1h 28m

IAD

Washington, D.C. Dulles Intl

ONT

Ontario

Nonstop

7h 28m

$466

Undisclosed Carrier

Deal found 5/25

Oct 30 - Nov 5

ONT

Ontario

IAD

Washington, D.C. Dulles Intl

Nonstop

1h 28m

IAD

Washington, D.C. Dulles Intl

ONT

Ontario

Nonstop

7h 28m

$470

Undisclosed Carrier

Deal found 5/24

Last minute flights from Ontario to Washington, D.C.

Check out these flights departing soon from Ontario to Washington, D.C.. Users should examine the flight details to ensure there are no surprises.

May 31 - Jun 7

ONT

Ontario

BWI

Baltimore/Washington

2 stops

19h 35m

BWI

Baltimore/Washington

ONT

Ontario

2 stops

26h 14m

$290

Undisclosed Carrier

Deal found 5/25

May 30 - Jun 7

ONT

Ontario

BWI

Baltimore/Washington

2 stops

14h 28m

BWI

Baltimore/Washington

ONT

Ontario

1 stop

7h 48m

$317

Frontier

Deal found 5/24

May 31 - Jun 10

ONT

Ontario

DCA

Washington, D.C. Reagan-National

1 stop

13h 39m

DCA

Washington, D.C. Reagan-National

ONT

Ontario

1 stop

8h 42m

$328

Frontier

Deal found 5/24

Jun 1 - Jun 6

ONT

Ontario

BWI

Baltimore/Washington

2 stops

40h 28m

BWI

Baltimore/Washington

ONT

Ontario

2 stops

20h 28m

$330

Frontier

Deal found 5/24

Jun 4 - Jun 12

ONT

Ontario

DCA

Washington, D.C. Reagan-National

1 stop

8h 54m

DCA

Washington, D.C. Reagan-National

ONT

Ontario

1 stop

8h 43m

$332

Undisclosed Carrier

Deal found 5/23

May 31 - Jun 3

ONT

Ontario

DCA

Washington, D.C. Reagan-National

1 stop

13h 39m

DCA

Washington, D.C. Reagan-National

ONT

Ontario

1 stop

8h 48m

$345

Frontier

Deal found 5/24

Jun 1 - Jun 6

ONT

Ontario

BWI

Baltimore/Washington

2 stops

40h 28m

BWI

Baltimore/Washington

ONT

Ontario

1 stop

25h 17m

$351

Frontier

Deal found 5/24

May 30 - Jun 3

ONT

Ontario

DCA

Washington, D.C. Reagan-National

1 stop

13h 39m

DCA

Washington, D.C. Reagan-National

ONT

Ontario

1 stop

8h 48m

$356

Undisclosed Carrier

Deal found 5/24

Jun 2 - Jun 18

ONT

Ontario

BWI

Baltimore/Washington

1 stop

18h 03m

BWI

Baltimore/Washington

ONT

Ontario

1 stop

7h 40m

$358

Frontier

Deal found 5/24

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

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.

Aug 22

ONT

Ontario

BWI

Baltimore/Washington

1 stop

8h 16m

$86

Undisclosed Carrier

Deal found 5/24

Aug 14

ONT

Ontario

BWI

Baltimore/Washington

1 stop

8h 47m

$104

Undisclosed Carrier

Deal found 5/24

Aug 26

ONT

Ontario

BWI

Baltimore/Washington

1 stop

8h 22m

$109

Multiple Airlines

Deal found 5/23

Jun 4

ONT

Ontario

BWI

Baltimore/Washington

2 stops

16h 20m

$112

Frontier

Deal found 5/24

Jun 5

ONT

Ontario

BWI

Baltimore/Washington

2 stops

24h 32m

$117

Frontier

Deal found 5/24

Aug 21

ONT

Ontario

BWI

Baltimore/Washington

1 stop

12h 47m

$119

Undisclosed Carrier

Deal found 5/24

Jul 25

ONT

Ontario

DCA

Washington, D.C. Reagan-National

1 stop

8h 55m

$125

Undisclosed Carrier

Deal found 5/24

Aug 25

ONT

Ontario

DCA

Washington, D.C. Reagan-National

1 stop

7h 47m

$128

American Airlines

Deal found 5/23

Aug 25

ONT

Ontario

IAD

Washington, D.C. Dulles Intl

1 stop

7h 19m

$128

American Airlines

Deal found 5/23

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

Fly from

Fly to

Budget

$217 - $403

Route

Depart

Return

Price

OntarioWashington, D.C. Reagan-National

ONT - DCA

ONTDCA

Ontario

Tue 9/5

1 stop8h 23m

Washington, D.C. Reagan-National

Sun 9/10

1 stop9h 20m

$217

Pick Dates

OntarioBaltimore/Washington

ONT - BWI

ONTBWI

Ontario

Wed 9/13

1 stop19h 20m

Baltimore/Washington

Wed 9/20

1 stop8h 21m

$223

Pick Dates

OntarioWashington, D.C. Reagan-National

ONT - DCA

ONTDCA

Ontario

Thu 6/8

1 stop8h 54m

Washington, D.C. Reagan-National

Mon 6/12

1 stop8h 43m

$242

Pick Dates

OntarioBaltimore/Washington

ONT - BWI

ONTBWI

Ontario

Tue 8/15

1 stop8h 47m

Baltimore/Washington

Wed 8/16

1 stop10h 52m

$248

Pick Dates

OntarioWashington, D.C. Reagan-National

ONT - DCA

ONTDCA

Ontario

Thu 9/28

1 stop6h 41m

Washington, D.C. Reagan-National

Mon 10/2

1 stop8h 24m

$256

Pick Dates

OntarioWashington, D.C. Dulles Intl

ONT - IAD

ONTIAD

Ontario

Wed 9/6

1 stop8h 55m

Washington, D.C. Dulles Intl

Thu 9/14

1 stop6h 57m

$256

Pick Dates

OntarioWashington, D.C. Dulles Intl

ONT - IAD

ONTIAD

Ontario

Fri 11/3

1 stop27h 30m

Washington, D.C. Dulles Intl

Mon 11/6

1 stop25h 16m

$365

Pick Dates

OntarioWashington, D.C. Dulles Intl

ONT - IAD

ONTIAD

Ontario

Tue 8/15

1 stop7h 41m

Washington, D.C. Dulles Intl

Wed 8/16

2 stops11h 34m

$386

Pick Dates

OntarioWashington, D.C. Dulles Intl

ONT - IAD

ONTIAD

Ontario

Wed 9/6

1 stop22h 53m

Washington, D.C. Dulles Intl

Wed 9/13

1 stop10h 01m

$403

Pick Dates

Flights are sorted by cheapest first

Deals found on 5/24

Reviews of Airlines Servicing Washington, D.C.

Get a feel of what it's like to fly with American Airlines, Undisclosed Carrier and United Airlines 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.

Alaska Airlines

8.0

Very good

1,375 reviews

Check prices

Reviews

1 / 10

Boarding staff was funny which was comforting in my time of grief. As I went to San Antonio for my dads funeral. Flight and staff were amazing. Unlike United that uses a much smaller carry on size. Seats were comfortable and the plane had a usb charger unlike United.

Alaska Airlines

8.0

Very good

1,375 reviews

Alaska Airlines

8.0

Very good

1,375 reviews

Check prices

Reviews

1 / 10

Boarding staff was funny which was comforting in my time of grief. As I went to San Antonio for my dads funeral. Flight and staff were amazing. Unlike United that uses a much smaller carry on size. Seats were comfortable and the plane had a usb charger unlike United.

Delta

8.0

Very good

2,341 reviews

Alaska Airlines

8.0

Very good

1,375 reviews

Check prices

Reviews

1 / 10

Boarding staff was funny which was comforting in my time of grief. As I went to San Antonio for my dads funeral. Flight and staff were amazing. Unlike United that uses a much smaller carry on size. Seats were comfortable and the plane had a usb charger unlike United.

United Airlines

7.6

Good

1,483 reviews

Alaska Airlines

8.0

Very good

1,375 reviews

Check prices

Reviews

1 / 10

Boarding staff was funny which was comforting in my time of grief. As I went to San Antonio for my dads funeral. Flight and staff were amazing. Unlike United that uses a much smaller carry on size. Seats were comfortable and the plane had a usb charger unlike United.

American Airlines

7.4

Good

2,147 reviews

Alaska Airlines

8.0

Very good

1,375 reviews

Check prices

Reviews

1 / 10

Boarding staff was funny which was comforting in my time of grief. As I went to San Antonio for my dads funeral. Flight and staff were amazing. Unlike United that uses a much smaller carry on size. Seats were comfortable and the plane had a usb charger unlike United.

Frontier

5.9

Fair

642 reviews

Alaska Airlines

8.0

Very good

1,375 reviews

Check prices

Reviews

1 / 10

Boarding staff was funny which was comforting in my time of grief. As I went to San Antonio for my dads funeral. Flight and staff were amazing. Unlike United that uses a much smaller carry on size. Seats were comfortable and the plane had a usb charger unlike United.

Related info for your journey

Top 5 airlines flying from Ontario to Washington, D.C.

Airline	Cheapest	Average	Flexibility	On-time	COVID-19 safety
Frontier	Cheapest$168	Average$278	FlexibilityNo cancel fee	On-time62%	COVID-19 safety	Search Frontier flights
United Airlines	Cheapest$169	Average$622	FlexibilityNo cancel fee	On-time69%	COVID-19 safety	Search United Airlines flights
Alaska Airlines	Cheapest$189	Average$548	FlexibilityNo cancel fee	On-time75%	COVID-19 safety	Search Alaska Airlines flights
Delta	Cheapest$267	Average$548	FlexibilityNo cancel fee	On-timeN/A	COVID-19 safety	Search Delta flights
American Airlines	Cheapest$329	Average$625	FlexibilityNo cancel fee	On-time71%	COVID-19 safety	Search American Airlines flights

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Weekly flight availability from Ontario to Washington, D.C.

Sunday	0daily flights
Monday	1daily flight
Tuesday	1daily flight
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Thursday	1daily flight
Friday	1daily flight
Saturday	0daily flights

Cheap flights from Ontario (ONT) to Washington, D.C. (WAS) from $86

This is the cheapest one-way flight price, found on 5/24. Prices may vary by date and flight preferences.

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The best prices from Ontario to Washington, D.C. are usually found in February or January, booked 13 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

How to find the cheapest flight from Ontario (ONT) to Washington, D.C. (WAS)

All the information you need to plan the best ONT to WAS flight in 2023: compare Ontario to Washington, D.C. flight prices with the expected peak season, weather and rainfall in Washington, D.C..

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Cheap flights from Ontario to Washington, D.C. in May, June 2023

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Ontario to Washington, D.C. 2023 flight deals

Cheap flights to Washington, D.C. from Ontario found for this year

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

Consider these cheap American Airlines flights we've found departing from Ontario to Washington, D.C.. Deals update often to give you more flight options matching your criteria

Cheap Undisclosed Carrier flights from Ontario to Washington, D.C.

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Non-stop flights to Washington, D.C. from Ontario

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Last minute flights from Ontario to Washington, D.C.

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

The cheapest one-way flights from Ontario to Washington, D.C.

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Top 5 airlines flying from Ontario to Washington, D.C.

The chart below displays the airlines Cheapflights users traveling from Ontario to Washington, D.C. choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.

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Weekly flight availability from Ontario to Washington, D.C.

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