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Dulles Intl

$146+ Cheap flights from Ottawa (YOW) to Dulles Intl (IAD)

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 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — IAD
Jan 22 — Jan 291
Wed 1/22
Wed 1/29
1 adult, Economy
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The best prices from Ottawa to Washington, D.C. Dulles Intl are usually found in June or September, booked 29 days in advance, depart on a Wednesday or Saturday and return on a Thursday

Cheap flight deals from Ottawa to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Ottawa (YOW) to Dulles Intl (IAD). 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 January 17, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$257
(Flightnetwork)

One-way from

$146
(oojo)

Popular in

December

Cheapest in

June

Average price

$330
Provider with most accurate pricing for Ottawa-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for Ottawa-Washington, D.C. Dulles Intl flights.
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From Ottawa to Washington, D.C. Dulles Intl
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One-way flight from Ottawa to Washington, D.C. Dulles Intl
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High demand for flights, 6% potential price rise
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Best time to find cheap flights, 2% potential price drop
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Average for round-trip flights in January 2025
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Find flight deals from Ottawa to Dulles Intl

Cheapest flights from Ottawa to Dulles Intl
Explore the most affordable flight options available from Ottawa to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 17, 2025.

This Flightnetwork deal was found by Cheapflights users on 1/16. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/27:00 amYOW - IAD
1 stop5h 39mPorter Airlines
Sun 3/92:00 pmIAD - YOW
1 stop4h 44mPorter Airlines
Deal found 1/16$257
This United Airlines deal was found by Cheapflights users on 1/16. 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.
Mon 3/36:00 amYOW - IAD
2 stops10h 25mUnited Airlines
Mon 3/310:15 pmIAD - YOW
Nonstop1h 39mUnited Airlines
Deal found 1/16$294
This Air Canada deal was found by Cheapflights users on 1/16. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/209:45 amYOW - IAD
Nonstop1h 53mAir Canada
Sun 2/2310:15 pmIAD - YOW
Nonstop1h 39mAir Canada
Deal found 1/16$305
This Mytrip deal was found by Cheapflights users on 1/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/207:30 pmYOW - IAD
Nonstop1h 53mMultiple Airlines
Sun 2/232:00 pmIAD - YOW
1 stop4h 39mMultiple Airlines
Deal found 1/16$326

Find flights from Ottawa to Dulles Intl within your budget

Customize your flight search to find flights from Ottawa to Dulles Intl 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 2,558,603 searches. Data last updated January 17, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Sun 3/2

7:00 am-12:39 pm

1 stop5h 39m

Washington, D.C. Dulles Intl

Sun 3/9

2:00 pm-6:44 pm

1 stop4h 44m

$257

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Mon 3/3

6:00 am-4:25 pm

2 stops10h 25m

Washington, D.C. Dulles Intl

Mon 3/3

10:15 pm-11:54 pm

Nonstop1h 39m

$294

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Thu 2/20

9:45 am-11:38 am

Nonstop1h 53m

Washington, D.C. Dulles Intl

Sun 2/23

10:15 pm-11:54 pm

Nonstop1h 39m

$305

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Thu 2/20

7:30 pm-9:23 pm

Nonstop1h 53m

Washington, D.C. Dulles Intl

Sun 2/23

2:00 pm-6:39 pm

1 stop4h 39m

$326

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Wed 3/12

9:40 am-12:59 pm

1 stop3h 19m

$146

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Fri 3/14

7:30 pm-9:23 pm

Nonstop1h 53m

$176

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Thu 2/13

7:30 pm-9:23 pm

Nonstop1h 53m

$219

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Thu 2/13

6:20 am-11:13 pm

2 stops16h 53m

$275

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Mon 5/26

6:00 am-9:16 pm

2 stops15h 16m

$470

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/16

Compare providers for flights from Ottawa to Dulles Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ottawa to Dulles Intl in January.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ottawa-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ottawa-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ottawa-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ottawa-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ottawa-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ottawa to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Ottawa 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.

Travel insights for flights from Ottawa to Dulles Intl

Get recent, data-driven insights about flights from Ottawa to Dulles Intl including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from Ottawa to Dulles Intl. Price data was last updated on January 10, 2025.

The price you pay for your flight from Ottawa to Washington, D.C. Dulles Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 29 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, August is the cheapest month in which you can book a flight from Ottawa to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Ottawa to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $389). 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.

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

Find hourly flight availability from Ottawa to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 17, 2025.

One of the essential ways to save on airfare from Ottawa to Washington, D.C. Dulles Intl Airport is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 5% on airfare.

Weekly flight availability from Ottawa to Washington, D.C. Dulles Intl Airport

Explore weekly flight availability from Ottawa to Dulles Intl. 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 January 17, 2025.

The most flights from YOW to IAD are scheduled on a Monday (4 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 on average).

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated January 17, 2025.
Read reviews from past customers who have flown Porter Airlines, United Airlines and Air Canada from Ottawa to Washington, D.C.. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
7.9
Good
276 reviews

Boarding

8.2

Food

7.6

Overall

7.9

Comfort

8.0

Crew

8.7

Entertainment

6.9

Reviews

1 / 10

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?

Porter Airlines
7.9
Good
276 reviews
Porter Airlines
7.9
Good
276 reviews

Boarding

8.2

Food

7.6

Overall

7.9

Comfort

8.0

Crew

8.7

Entertainment

6.9

Reviews

1 / 10

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?

United Airlines
7.4
Good
8,965 reviews
Porter Airlines
7.9
Good
276 reviews

Boarding

8.2

Food

7.6

Overall

7.9

Comfort

8.0

Crew

8.7

Entertainment

6.9

Reviews

1 / 10

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?

WestJet
7.2
Good
2,824 reviews
Porter Airlines
7.9
Good
276 reviews

Boarding

8.2

Food

7.6

Overall

7.9

Comfort

8.0

Crew

8.7

Entertainment

6.9

Reviews

1 / 10

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?

Air Canada
7.0
Good
8,587 reviews
Porter Airlines
7.9
Good
276 reviews

Boarding

8.2

Food

7.6

Overall

7.9

Comfort

8.0

Crew

8.7

Entertainment

6.9

Reviews

1 / 10

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?

Related info for your journey

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

    Ottawa (YOW), located 6.6 mi from the city center, is the airport you fly out of when you book flights from Ottawa to Washington, D.C. Dulles Intl. 3 airlines have flights from Ottawa to Washington, D.C. Dulles Intl on a regular basis. Booking flights from Ottawa to Washington, D.C. Dulles Intl should not be difficult; the airport handles an average of 3 outbound flights to Washington, D.C. Dulles Intl per day.

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

    Porter Airlines, at $257, was found to be the cheapest airline from Ottawa to Washington, D.C. Dulles Intl Airport.Alternate airlines to your destination round-trip include United Airlines and Air Canada. These flights start at 31% lower than the current average price 3 months from now.

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

    The cheapest airlines for a one-way flight from Ottawa to Washington, D.C. Dulles Intl Airport are Porter Airlines ($146), Air Canada ($176), and United Airlines ($219).

  • What are the most reliable airlines from Ottawa to Washington, D.C. Dulles Intl Airport?

    Consider Avianca (100%), GoJet (66%) or Air Canada (66%) when booking your flight. These represent the most reliable airlines when flying from Ottawa to Washington, D.C. Dulles Intl Airport.

  • What are the cheapest flights from Ottawa to Washington, D.C. Dulles Intl Airport?

    On average you can expect to pay $806 for a flight from Ottawa to Washington, D.C. Dulles Intl Airport. The cheapest flight overall is $172 while the most popular route, (Ottawa - Washington, D.C. Dulles Intl) is currently priced at $243.

  • Can I find deals for flights from Ottawa to Dulles Intl that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Ottawa to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, August is the cheapest month in which you can book a flight from Ottawa to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Ottawa to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $389). 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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Top 3 airlines flying from Ottawa to Dulles Intl

Discover the top 3 airlines that operate flights from Ottawa to Dulles Intl. 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 2,558,603 searches. Data last updated January 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$240Average$459FlexibilityNo cancel feeOn-time69%
Porter AirlinesCheapest$262Average$379FlexibilityNo cancel feeOn-time52%
Air CanadaCheapest$277Average$411FlexibilityNo cancel feeOn-time67%
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