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$143+ Cheap flights from Dulles Intl (IAD) to Ontario (ONT)

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 8/24. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — ONT
Jul 30 — Aug 61
From?
To?
Tue 7/30
Tue 8/6
1 adult, Economy
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The best prices from Washington, D.C. Dulles Intl to Ontario are usually found in January or September, booked 90 days in advance, depart on a Thursday or Friday and return on a Tuesday

Cheap flight deals from Dulles Intl to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Ontario (ONT). 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 July 25, 2024.

Popular in

December

Cheapest in

January

Round-trip from

$286
(Delta)

One-way from

$143
(Delta)
High demand for flights, 30% potential price rise
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Best time to find cheap flights, 37% potential price drop
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From Washington, D.C. Dulles Intl to Ontario
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One-way flight from Washington, D.C. Dulles Intl to Ontario
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What is the cheapest day to fly round-trip from Washington, D.C. Dulles Intl Airport to Ontario?

Flights from Washington, D.C. Dulles Intl Airport to Ontario are found to be more expensive on Sunday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Ontario.

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

To save on the cost of your flight from Washington, D.C. Dulles Intl Airport to Ontario, book at least 31 days before your planned departure. Booking around this time can save you about 84% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $366 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $600.

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

September can be a great time to fly to Ontario from Washington, D.C. Dulles Intl Airport with a flight ticket averaging about $346. Cheapflights users have found deals in the month of September for as cheap as $107. The most expensive prices can be found in the month of December.

What is the cheapest time of day to fly from IAD to ONT?

It’s typically best to fly out from Washington, D.C. Dulles Intl Airport to Ontario in the evening. Doing so could potentially save you 42% on the flight price compared to flying in the afternoon, which is usually more expensive.

Cheap Dulles Intl to Ontario flights in July & August 2024

Find cheap flight options from Dulles Intl to Ontario specifically for the months of July and August 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,752,877 searches. Prices were last updated on July 25, 2024.
Check out some of the best flight deals from Washington, D.C. to Ontario in 2024. Check back in a little while for more flight options.
This Delta deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/247:15 amIAD - ONT
1 stop8h 04mDelta
Sat 8/311:24 pmONT - IAD
1 stop7h 26mDelta
Deal found 7/25$286
This Delta deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/156:00 amIAD - ONT
1 stop7h 13mDelta
Wed 8/211:24 pmONT - IAD
1 stop7h 26mDelta
Deal found 7/25$326
This Delta deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/246:00 amIAD - ONT
1 stop7h 13mDelta
Sun 9/16:50 amONT - IAD
1 stop14h 08mDelta
Deal found 7/25$355
This Delta deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/187:15 amIAD - ONT
1 stop8h 04mDelta
Tue 8/276:50 amONT - IAD
1 stop8h 25mDelta
Deal found 7/25$357
This Delta deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/136:00 amIAD - ONT
1 stop7h 13mDelta
Tue 8/2010:00 pmONT - IAD
2 stops10h 14mDelta
Deal found 7/25$362
This Delta deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/226:00 amIAD - ONT
1 stop7h 13mDelta
Thu 8/291:24 pmONT - IAD
1 stop7h 26mDelta
Deal found 7/24$366
This United Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/288:24 amIAD - ONT
1 stop7h 06mUnited Airlines
Wed 8/286:25 pmONT - IAD
1 stop7h 59mUnited Airlines
Deal found 7/24$386
This Delta deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/136:00 amIAD - ONT
1 stop7h 13mDelta
Mon 8/1910:00 pmONT - IAD
1 stop9h 11mDelta
Deal found 7/25$397
This Delta deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/134:52 pmIAD - ONT
1 stop9h 05mDelta
Mon 8/1910:00 pmONT - IAD
2 stops10h 14mDelta
Deal found 7/25$402

Dulles Intl to Ontario 2024 flight deals

Discover exclusive flight deals for travel between Dulles Intl and Ontario in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,752,877 searches. Data last updated July 25, 2024.
Check out some of the best flight deals from Washington, D.C. to Ontario in 2024. Check back in a little while for more flight options.
This Delta deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/107:15 amIAD - ONT
1 stop8h 00mDelta
Tue 9/241:20 pmONT - IAD
1 stop7h 33mDelta
Deal found 7/25$286
This Delta deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/65:17 pmIAD - ONT
2 stops9h 42mDelta
Tue 9/1010:00 pmONT - IAD
1 stop8h 01mDelta
Deal found 7/25$291
This Delta deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/65:17 pmIAD - ONT
2 stops9h 42mDelta
Tue 9/1010:00 pmONT - IAD
2 stops10h 23mDelta
Deal found 7/25$296
This Delta deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/156:00 amIAD - ONT
1 stop7h 13mDelta
Wed 8/211:24 pmONT - IAD
1 stop7h 26mDelta
Deal found 7/25$326
This American Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/125:20 pmIAD - ONT
1 stop8h 28mAmerican Airlines
Wed 9/185:01 pmONT - IAD
2 stops12h 42mAmerican Airlines
Deal found 7/25$331
This Alaska Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/94:13 pmIAD - ONT
1 stop10h 46mAlaska Airlines
Wed 9/116:00 amONT - IAD
1 stop9h 09mAlaska Airlines
Deal found 7/25$332
This American Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/186:57 amIAD - ONT
2 stops12h 19mAmerican Airlines
Mon 9/237:30 pmONT - IAD
2 stops12h 04mAmerican Airlines
Deal found 7/25$336
This Alaska Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/107:09 pmIAD - ONT
1 stop17h 06mAlaska Airlines
Tue 9/1710:10 amONT - IAD
1 stop10h 49mAlaska Airlines
Deal found 7/25$340
This Alaska Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/177:00 amIAD - ONT
1 stop11h 33mAlaska Airlines
Fri 9/204:28 pmONT - IAD
1 stop19h 48mAlaska Airlines
Deal found 7/25$350

Dulles Intl to Ontario flights leaving soon

Find last-minute flight options from Dulles Intl to Ontario 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 2,752,877 searches. Data last updated July 25, 2024.
Have a look at some of the last-minute flights available departing from Washington, D.C. to Ontario. Users should double check the flight they book to ensure it matches the day, time, and destination they're looking for.
This American Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/46:00 amIAD - ONT
1 stop6h 55mAmerican Airlines
Fri 8/910:46 amONT - IAD
1 stop9h 36mAmerican Airlines
Deal found 7/25$541
This American Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/46:00 amIAD - ONT
1 stop6h 55mAmerican Airlines
Sun 8/117:27 pmONT - IAD
2 stops10h 17mAmerican Airlines
Deal found 7/25$546
This American Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/46:00 amIAD - ONT
2 stops12h 48mAmerican Airlines
Sun 8/117:27 pmONT - IAD
2 stops10h 17mAmerican Airlines
Deal found 7/25$551
This American Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/15:12 pmIAD - ONT
1 stop7h 53mAmerican Airlines
Sun 8/412:43 pmONT - IAD
1 stop7h 41mAmerican Airlines
Deal found 7/25$654
This American Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/25:00 amIAD - ONT
2 stops11h 49mAmerican Airlines
Sun 8/410:36 pmONT - IAD
1 stop7h 18mAmerican Airlines
Deal found 7/25$659
This American Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/21:22 pmIAD - ONT
2 stops11h 18mAmerican Airlines
Sun 8/47:18 pmONT - IAD
2 stops10h 36mAmerican Airlines
Deal found 7/25$664
This Delta deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/317:15 amIAD - ONT
1 stop8h 00mDelta
Wed 8/71:24 pmONT - IAD
1 stop7h 26mDelta
Deal found 7/25$694
This Delta deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/3112:35 pmIAD - ONT
1 stop9h 52mDelta
Wed 8/710:00 pmONT - IAD
2 stops10h 14mDelta
Deal found 7/25$699
This Delta deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/317:16 amIAD - ONT
2 stops12h 04mDelta
Wed 8/710:00 pmONT - IAD
2 stops10h 14mDelta
Deal found 7/25$704

One-way flights to Ontario from Dulles Intl

Search for one-way flight options from Dulles Intl to Ontario. 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 2,752,877 searches. Data last updated July 25, 2024.
Users in need of a one-way flight from Washington, D.C. to Ontario can choose from these deals. For those needing a return trip from Washington, D.C., there is a search form available above.
This Delta deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/247:15 amIAD - ONT
1 stop8h 04mDelta
Deal found 7/23$143
This Delta deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/274:52 pmIAD - ONT
1 stop6h 53mDelta
Deal found 7/25$144
This Trip.com deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/174:13 pmIAD - ONT
1 stop9h 07mAlaska Airlines
Deal found 7/24$146
This American Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/206:52 amIAD - ONT
2 stops12h 16mAmerican Airlines
Deal found 7/24$148
This Alaska Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/277:00 amIAD - ONT
1 stop11h 33mAlaska Airlines
Deal found 7/24$149
This Delta deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/264:52 pmIAD - ONT
1 stop6h 53mDelta
Deal found 7/25$183
This American Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/164:48 pmIAD - ONT
1 stop7h 32mAmerican Airlines
Deal found 7/24$184
This American Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/225:03 amIAD - ONT
2 stops9h 47mAmerican Airlines
Deal found 7/24$188
This American Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/176:52 amIAD - ONT
2 stops12h 16mAmerican Airlines
Deal found 7/25$192

Find flights from Dulles Intl to Ontario within your budget

Customize your flight search to find flights from Dulles Intl to Ontario 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 2,752,877 searches. Data last updated July 25, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$286 - $426

Route

Depart

Return

Price

Washington, D.C. Dulles IntlOntario

IAD - ONT

IADONT

Washington, D.C. Dulles Intl

Tue 9/10

1 stop7h 18m

Ontario

Wed 9/11

1 stop7h 35m

$286

Washington, D.C. Dulles IntlOntario

IAD - ONT

IADONT

Washington, D.C. Dulles Intl

Fri 9/6

2 stops9h 42m

Ontario

Wed 9/11

1 stop9h 26m

$291

Washington, D.C. Dulles IntlOntario

IAD - ONT

IADONT

Washington, D.C. Dulles Intl

Fri 9/6

2 stops9h 42m

Ontario

Tue 9/10

2 stops10h 23m

$296

Washington, D.C. Dulles IntlOntario

IAD - ONT

IADONT

Washington, D.C. Dulles Intl

Mon 9/9

1 stop10h 46m

Ontario

Wed 9/11

1 stop10h 49m

$332

Washington, D.C. Dulles IntlOntario

IAD - ONT

IADONT

Washington, D.C. Dulles Intl

Sat 8/24

2 stops9h 50m

Ontario

Mon 8/26

2 stops11h 43m

$336

Washington, D.C. Dulles IntlOntario

IAD - ONT

IADONT

Washington, D.C. Dulles Intl

Tue 9/10

1 stop17h 06m

Ontario

Tue 9/17

1 stop10h 49m

$340

Washington, D.C. Dulles IntlOntario

IAD - ONT

IADONT

Washington, D.C. Dulles Intl

Sat 8/31

2 stops12h 10m

Ontario

Sun 9/8

2 stops10h 13m

$367

Washington, D.C. Dulles IntlOntario

IAD - ONT

IADONT

Washington, D.C. Dulles Intl

Wed 9/25

1 stop9h 45m

Ontario

Wed 10/2

1 stop6h 25m

$375

Washington, D.C. Dulles IntlOntario

IAD - ONT

IADONT

Washington, D.C. Dulles Intl

Sat 8/17

1 stop8h 14m

Ontario

Mon 8/19

1 stop7h 59m

$426

Flights are sorted by cheapest first

Deals found on 7/25

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Ontario?

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Ontario. Price data was last updated on July 23, 2024.
The best time to book flights from Washington, D.C. Dulles Intl Airport to Ontario is 34 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
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What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to Ontario?

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Ontario. Price data was last updated on July 21, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Ontario flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
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Best time to book a flight from Dulles Intl to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Dulles Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Temperature and rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average temperature and rainfall totals by month.

LAX

Temperature

57.2 - 73.4 °F

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated July 25, 2024.
Read reviews from past customers who have flown American Airlines, Alaska Airlines and Delta from Washington, D.C. to Ontario. 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
5,641 reviews

Boarding

8.3

Food

7.3

Comfort

8.1

Overall

8.2

Entertainment

7.8

Crew

8.7

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Southwest
8.2
Very good
5,641 reviews
Southwest
8.2
Very good
5,641 reviews

Boarding

8.3

Food

7.3

Comfort

8.1

Overall

8.2

Entertainment

7.8

Crew

8.7

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Alaska Airlines
8.1
Very good
9,365 reviews
Southwest
8.2
Very good
5,641 reviews

Boarding

8.3

Food

7.3

Comfort

8.1

Overall

8.2

Entertainment

7.8

Crew

8.7

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Delta
8.0
Very good
9,630 reviews
Southwest
8.2
Very good
5,641 reviews

Boarding

8.3

Food

7.3

Comfort

8.1

Overall

8.2

Entertainment

7.8

Crew

8.7

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

United Airlines
7.4
Good
10,000 reviews
Southwest
8.2
Very good
5,641 reviews

Boarding

8.3

Food

7.3

Comfort

8.1

Overall

8.2

Entertainment

7.8

Crew

8.7

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

American Airlines
7.3
Good
10,000 reviews
Southwest
8.2
Very good
5,641 reviews

Boarding

8.3

Food

7.3

Comfort

8.1

Overall

8.2

Entertainment

7.8

Crew

8.7

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Ontario. 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 into for flights to Ontario from Washington, D.C. Dulles Intl?

    Ontario (ONT), located 3.1 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. Dulles Intl to Ontario. 3 airlines have flights to Ontario from Washington, D.C. Dulles Intl on a regular basis. Booking flights from Washington, D.C. Dulles Intl to Ontario should not be difficult; the airport handles an average of 0 inbound flights from Washington, D.C. Dulles Intl per day.

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

    Yes, there are multiple flights from Washington, D.C. Dulles Intl Airport to Ontario for under $300. The cheapest flight booked recently is on Delta for just $286, but on average you can expect to pay $345.

  • Are there last-minute flights available from Washington, D.C. Dulles Intl Airport to Ontario for under $600?

    There are currently 20+ open flights from Washington, D.C. Dulles Intl Airport to Ontario within the next 7 days for less than $600.

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

    Our cheapest airline available from Washington, D.C. Dulles Intl Airport to Ontario is Delta. Our recent data shows that you can find tickets from as low as $286 on this airline. Additional options worth looking into are Alaska Airlines and American Airlines, starting at $332 and $336 round-trip. Delta is priced at 33% lower than the current average price of a flight leaving 3 months from now.

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

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $143. However, be on the lookout for offers from Alaska Airlines and American Airlines, as they are both options that can get you from Washington, D.C. Dulles Intl Airport to Ontario for a low price.

  • What does IAD to ONT mean?

    Washington, D.C. Dulles Intl Airport is IAD and Ontario Airport is ONT. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service.

  • Can I find deals for flights from Dulles Intl to Ontario that include extra baggage allowance?

    The amount of baggage you can bring on your Dulles Intl to Ontario 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 Dulles Intl to Ontario with specific airlines?

    Yes, Cheapflights allows you to browse and filter Dulles Intl to Ontario 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 Dulles Intl to Ontario that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Ontario?

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

  • Can I find deals for business class flights from Dulles Intl to Ontario?

    Yes. Cheapflights offers flight deals from Dulles Intl to Ontario 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 Dulles Intl to Ontario that allow pets onboard?

    Many airlines flying from Dulles Intl to Ontario 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 Dulles Intl to Ontario?

    Yes, you can often find last-minute deals on Dulles Intl to Ontario 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 Washington, D.C. Dulles Intl Airport to Ontario flight deals updated?

    The Washington, D.C. Dulles Intl Airport to Ontario flight deals you see on this page were last updated on 7/25.

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

    American Airlines, Delta and United Airlines are the most popular airlines when flying from Washington, D.C. Dulles Intl Airport to Ontario.

  • What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Ontario?

    Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Ontario (average of $237). Flying from Washington, D.C. Dulles Intl Airport to Ontario in July is currently the most expensive (average of $293). 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.

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Alternative routes for Dulles Intl to Ontario
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Top 3 airlines flying from Dulles Intl to Ontario

Discover the top 3 airlines that operate flights from Dulles Intl to Ontario. 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 2,752,877 searches. Data last updated July 25, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$245Average$467FlexibilityNo cancel feeOn-time71%
DeltaCheapest$256Average$370FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$317Average$505FlexibilityNo cancel feeOn-time69%
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