What airlines fly to Washington, D.C. Dulles Intl Airport?

Air Canada, United Airlines and Porter Airlines are the top three most popular airlines that fly to Washington, D.C. Dulles Intl Airport from Ottawa according to our data. Air Canada is the first choice among our users, with 52% of people opting to fly with this airline when traveling to Washington, D.C. Dulles Intl Airport. Keep in mind that there are 3 different airlines that fly to Washington, D.C. Dulles Intl Airport on a routine basis, so you have a few additional options to choose from.

How many flights depart from Ottawa to Washington, D.C. Dulles Intl Airport on average per week?

The number of flights available between Ottawa and Washington, D.C. Dulles Intl Airport is 56 per week as of July 2026. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.

What is the cheapest airline that flies from Ottawa to Washington, D.C. Dulles Intl?

Porter Airlines, United Airlines, and Air Canada are the most popular carriers operating from Ottawa to Washington, D.C. Dulles Intl

How many flights depart from Ottawa to Washington, D.C. Dulles Intl Airport on average per day?

As of July 2026, there are 8 flights per day flying from Ottawa to Washington, D.C. Dulles Intl Airport. The most common time of day flights depart is 6:00AM, with 50% of flights taking off at noon.

When did momondo last update prices for flights from Ottawa Airport to Washington, D.C. Dulles Intl Airport?

Prices for flights from Ottawa Airport to Washington, D.C. Dulles Intl Airport are updated daily.

How many operators does momondo search for flights from Ottawa Airport to Washington, D.C. Dulles Intl Airport?

There are 2 operators available for flights from Ottawa Airport to Washington, D.C. Dulles Intl Airport as of July 2026.

How old do you have to be to fly from Ottawa Airport to Washington, D.C. Dulles Intl Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ottawa Airport to Washington, D.C. Dulles Intl Airport.

What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

The travel and health documents required for your trip to Washington, D.C. Dulles Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington, D.C. Dulles Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$169 Cheap Flights from Ottawa to Washington, D.C. Dulles Intl Airport in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ottawa to Washington, D.C.

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:15 pm - 4:38 pm

YOW

IAD

4h 23m

1 stop

5:15 pm - 9:52 pm

IAD

YOW

4h 37m

1 stop

$328Air Canada

Wed, Sep 30 - Wed, Oct 7

12:15 pm - 4:38 pm

YOW

IAD

4h 23m

1 stop

5:15 pm - 9:52 pm

IAD

YOW

4h 37m

1 stop

$329Air Canada

Sat, Oct 10 - Sun, Oct 18

10:40 am - 3:10 pm

YOW

IAD

4h 30m

1 stop

3:50 pm - 9:42 pm

IAD

YOW

5h 52m

1 stop

$330Porter Airlines

Thu, Oct 8 - Sun, Oct 11

10:40 am - 3:10 pm

YOW

IAD

4h 30m

1 stop

3:50 pm - 9:44 pm

IAD

YOW

5h 54m

1 stop

$332Porter Airlines

Wed, Aug 19 - Tue, Aug 25

10:40 am - 3:10 pm

YOW

IAD

4h 30m

1 stop

3:50 pm - 8:04 pm

IAD

YOW

4h 14m

1 stop

$337Porter Airlines

Thu, Aug 20 - Thu, Aug 27

10:40 am - 3:10 pm

YOW

IAD

4h 30m

1 stop

3:50 pm - 9:42 pm

IAD

YOW

5h 52m

1 stop

$338Porter Airlines

Thu, Oct 1 - Sun, Oct 4

10:40 am - 3:10 pm

YOW

IAD

4h 30m

1 stop

11:25 am - 5:54 pm

IAD

YOW

6h 29m

1 stop

$339Porter Airlines

Wed, Aug 12 - Wed, Aug 19

10:40 am - 3:10 pm

YOW

IAD

4h 30m

1 stop

3:50 pm - 8:04 pm

IAD

YOW

4h 14m

1 stop

$341Porter Airlines

Fri, Aug 14 - Mon, Aug 17

10:40 am - 3:10 pm

YOW

IAD

4h 30m

1 stop

11:25 am - 5:52 pm

IAD

YOW

6h 27m

1 stop

$342Porter Airlines

Fri, Oct 9 - Tue, Oct 13

10:40 am - 3:10 pm

YOW

IAD

4h 30m

1 stop

11:25 am - 5:52 pm

IAD

YOW

6h 27m

1 stop

$344Porter Airlines

Thu, Oct 1 - Fri, Oct 2

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Air Canada flights from Ottawa to Washington, D.C. Dulles Intl Airport

Our best Air Canada deals on Ottawa to Washington, D.C. Dulles Intl Airport flight tickets

Air Canada

Sep 30

YOW12:15 pmOttawa

4h 23m

1 stop

IAD4:38 pmWashington, D.C. Dulles Intl

Oct 7

IAD5:15 pmWashington, D.C. Dulles Intl

4h 37m

1 stop

YOW9:52 pmOttawa

$328

Air Canada

Oct 10

YOW12:15 pmOttawa

4h 23m

1 stop

IAD4:38 pmWashington, D.C. Dulles Intl

Oct 18

IAD5:15 pmWashington, D.C. Dulles Intl

4h 37m

1 stop

YOW9:52 pmOttawa

$329

Air Canada

Aug 14

YOW12:15 pmOttawa

4h 26m

1 stop

IAD4:41 pmWashington, D.C. Dulles Intl

Aug 16

IAD5:20 pmWashington, D.C. Dulles Intl

4h 32m

1 stop

YOW9:52 pmOttawa

$349

United Airlines flights from Ottawa to Washington, D.C. Dulles Intl Airport

Our best United Airlines deals on Ottawa to Washington, D.C. Dulles Intl Airport flight tickets

United Airlines

Aug 19

YOW7:30 pmOttawa

1h 44m

IAD9:14 pmWashington, D.C. Dulles Intl

Aug 26

IAD8:15 amWashington, D.C. Dulles Intl

1h 41m

YOW9:56 amOttawa

$348

United Airlines

Oct 1

YOW6:05 amOttawa

10h 18m

1 stop

IAD4:23 pmWashington, D.C. Dulles Intl

Oct 1

IAD10:10 pmWashington, D.C. Dulles Intl

1h 44m

YOW11:54 pmOttawa

$351

United Airlines

Aug 13

YOW2:52 pmOttawa

1h 43m

IAD4:35 pmWashington, D.C. Dulles Intl

Aug 17

IAD5:45 pmWashington, D.C. Dulles Intl

4h 50m

1 stop

YOW10:35 pmOttawa

$365

momondo Fare Finder

Use the filters below to find and compare flights from Ottawa to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Wed 9/30

12:15 pm-4:38 pm

1 stop4h 23m

Washington, D.C. Dulles Intl

Wed 10/7

5:15 pm-9:52 pm

1 stop4h 37m

$328

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Sat 10/10

12:15 pm-4:38 pm

1 stop4h 23m

Washington, D.C. Dulles Intl

Sun 10/18

5:15 pm-9:52 pm

1 stop4h 37m

$329

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Thu 10/8

10:40 am-3:10 pm

1 stop4h 30m

Washington, D.C. Dulles Intl

Sun 10/11

3:50 pm-9:42 pm

1 stop5h 52m

$330

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Wed 8/19

10:40 am-3:10 pm

1 stop4h 30m

Washington, D.C. Dulles Intl

Tue 8/25

3:50 pm-9:44 pm

1 stop5h 54m

$332

Quickest round-trip

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Thu 8/20

10:40 am-3:10 pm

1 stop4h 30m

Washington, D.C. Dulles Intl

Thu 8/27

3:50 pm-8:04 pm

1 stop4h 14m

$337

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Thu 10/1

10:40 am-3:10 pm

1 stop4h 30m

Washington, D.C. Dulles Intl

Sun 10/4

3:50 pm-9:42 pm

1 stop5h 52m

$338

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Wed 8/12

10:40 am-3:10 pm

1 stop4h 30m

Washington, D.C. Dulles Intl

Wed 8/19

11:25 am-5:54 pm

1 stop6h 29m

$339

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Fri 8/14

10:40 am-3:10 pm

1 stop4h 30m

Washington, D.C. Dulles Intl

Mon 8/17

3:50 pm-8:04 pm

1 stop4h 14m

$341

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Fri 10/9

10:40 am-3:10 pm

1 stop4h 30m

Washington, D.C. Dulles Intl

Tue 10/13

11:25 am-5:52 pm

1 stop6h 27m

$342

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Thu 10/1

10:40 am-3:10 pm

1 stop4h 30m

Washington, D.C. Dulles Intl

Fri 10/2

11:25 am-5:52 pm

1 stop6h 27m

$344

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ottawa to Washington, D.C. Dulles Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the typical price of a round-trip flight between Ottawa and Washington, D.C. Dulles Intl Airport?

Prices are currently low for flights on this route.

Typical prices usually range from $378 to $508.
The lowest price recently found on this route was $328.

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

In general, January is the cheapest month to fly from Ottawa to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $306. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of January, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $357.

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Our data shows that Tuesday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $514. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Ottawa to Washington, D.C. Dulles Intl Airport for around $801.

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Flying to Washington, D.C. Dulles Intl Airport from Ottawa in the morning is the least expensive time of day to depart. momondo users have found prices as low as $512 when looking at flights departing in the morning. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $728 on average. Flights to Washington, D.C. Dulles Intl Airport from Ottawa at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Ottawa to Washington, D.C. Dulles Intl flight route?

Fly from Ottawa to Washington, D.C. Dulles Intl for the best Ottawa - Washington, D.C. Dulles Intl flight prices

What cabin class options are available on Ottawa to Washington, D.C. Dulles Intl Airport flights?

There are 4 cabin classes available to choose from on Ottawa to Washington, D.C. Dulles Intl Airport flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Ottawa to Washington, D.C. Dulles Intl Airport flights?

You could potentially save up to 18% on your flight if you consider stops on a Ottawa to Washington, D.C. Dulles Intl Airport flight.

How have Ottawa to Washington, D.C. Dulles Intl Airport flight prices changed over time?

As of July 2026, prices for Ottawa to Washington, D.C. Dulles Intl Airport flights are approximately 11% more expensive when compared to flights at the same time last year.

When to book flights from Ottawa to Washington, D.C. Dulles Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Ottawa to Washington, D.C. Dulles Intl Airport according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Ottawa to Washington, D.C. Dulles Intl Airport (YOW to IAD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ottawa to Washington, D.C. Dulles Intl Airport

Best Price Found	$299
Fastest flight time	1h 43m
Direct flights	Every day

The best one-way flight to Washington, D.C. Dulles Intl Airport from Ottawa in the past 72 hours is $299. The best round-trip flight deal from Ottawa to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $442.

The fastest flight from Ottawa to Washington, D.C. Dulles Intl Airport takes 1h 43m

Direct flights go from Ottawa to Washington, D.C. Dulles Intl Airport every day.

Search flight deals

Frequently asked questions about flying from Ottawa to Washington, D.C. Dulles Intl Airport

How far is Ottawa to Washington, D.C. Dulles Intl by plane?
The distance between Ottawa and Washington, D.C. Dulles Intl is about 455.4 mi. By plane, this route typically takes 1h 43m.
When did momondo last update prices for flights from Ottawa Airport to Washington, D.C. Dulles Intl Airport?
Prices for flights from Ottawa Airport to Washington, D.C. Dulles Intl Airport are updated daily.
How many operators does momondo search for flights from Ottawa Airport to Washington, D.C. Dulles Intl Airport?
There are 2 operators available for flights from Ottawa Airport to Washington, D.C. Dulles Intl Airport as of July 2026.
How old do you have to be to fly from Ottawa Airport to Washington, D.C. Dulles Intl Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ottawa Airport to Washington, D.C. Dulles Intl Airport.
What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?
The travel and health documents required for your trip to Washington, D.C. Dulles Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington, D.C. Dulles Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Ottawa to Washington, D.C. Dulles Intl Airport?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Ottawa to Washington, D.C. Dulles Intl Airport is Embraer 175 (Enhanced Winglets) (32.46% of total bookings). The next most popular plane models are Canadair (Bombardier) Regional Jet CRJ-550 (32.23%), Embraer 195 E2 (10.19%), and Canadair (Bombardier) Regional Jet 900 (5.21%).
What is the most popular airline from Ottawa to Washington, D.C. Dulles Intl Airport?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Ottawa to Washington, D.C. Dulles Intl Airport is United Airlines (58% of total bookings). The next most popular airline is Air Canada (42%).

Best airlines flying from Ottawa to Washington, D.C. Dulles Intl Airport

Compare and see reviews for airlines that fly from Ottawa to Washington, D.C. Dulles Intl Airport with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $344	Free Cancellation	Rating 7.4 10,041 reviews		Search United Airlines flights
Air Canada	PriceFrom $377	Free Cancellation	Rating 7.1 11,387 reviews		Search Air Canada flights

United Airlines Flights From Ottawa to Washington, D.C. Dulles Intl Airport
Across 28 United Airlines flights from Ottawa to Washington, D.C. Dulles Intl Airport this week, the average price was $471, with the best United Airlines deals starting from $344 round-trip. 10,041 users have rated United Airlines on momondo, with an average score of 7.4/10.
Air Canada Flights From Ottawa to Washington, D.C. Dulles Intl Airport
Air Canada (7.1/10 from 11,387 reviews) operates around 28 flights from Ottawa to Washington, D.C. Dulles Intl Airport in any given week. The average Air Canada airfare for this route is around $444, with deals from around $377 rare but found on momondo. Referenced prices are for round-trip Ottawa to Washington, D.C. Dulles Intl Airport flight searches in the last 72 hours.

Alexandria

National Harbor

Arlington

Gettysburg

Winchester

Waldorf

Laurel

Woodbridge

Fredericksburg

Gaithersburg

Linthicum Heights

Rockville

Manassas

Towson

Silver Spring

Colonial Beach

Sterling

Springfield

Tysons

Fairfax

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Can I find flights from Ottawa to Washington, D.C. with flexible booking policies on momondo?

All flight searches from Ottawa to Washington, D.C. on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Ottawa to Washington, D.C.?

Once all potential Ottawa to Washington, D.C. flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Ottawa to Washington, D.C. right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Washington, D.C., momondo offers a useful price alert feature which will track prices for flights to Washington, D.C. from Ottawa and alert you when they change.

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Cheap flights from Ottawa to Washington, D.C. from $169

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ottawa to Washington, D.C. departing on 8/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Air Canada flights from Ottawa to Washington, D.C. Dulles Intl Airport

Our best Air Canada deals on Ottawa to Washington, D.C. Dulles Intl Airport flight tickets

United Airlines flights from Ottawa to Washington, D.C. Dulles Intl Airport

Our best United Airlines deals on Ottawa to Washington, D.C. Dulles Intl Airport flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Ottawa to Washington, D.C. Dulles Intl Airport that are best for you.

See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Ottawa to Washington, D.C. Dulles Intl Airport

What is the typical price of a round-trip flight between Ottawa and Washington, D.C. Dulles Intl Airport?

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

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

What is the cheapest Ottawa to Washington, D.C. Dulles Intl flight route?

What cabin class options are available on Ottawa to Washington, D.C. Dulles Intl Airport flights?

Can stopping save me money on Ottawa to Washington, D.C. Dulles Intl Airport flights?

How have Ottawa to Washington, D.C. Dulles Intl Airport flight prices changed over time?

What is the cheapest airline that flies from Ottawa to Washington, D.C. Dulles Intl?

What airlines fly to Washington, D.C. Dulles Intl Airport?

How many flights depart from Ottawa to Washington, D.C. Dulles Intl Airport on average per day?

How many flights depart from Ottawa to Washington, D.C. Dulles Intl Airport on average per week?

When to book flights from Ottawa to Washington, D.C. Dulles Intl Airport

Cheap Ottawa to Washington, D.C. Dulles Intl Airport (YOW to IAD) flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Ottawa to Washington, D.C. Dulles Intl Airport

Best airlines flying from Ottawa to Washington, D.C. Dulles Intl Airport

Compare and see reviews for airlines that fly from Ottawa to Washington, D.C. Dulles Intl Airport with momondo

Traveling to a place near Washington, D.C.?

Why use momondo?

An easier way to manage your Washington, D.C. Dulles Intl Airport trip

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Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Washington, D.C.

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According to popular flight searches on momondo this year

Washington, D.C. Dulles Intl Airport flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Washington, D.C.

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Washington, D.C.

List of cabin classes available on flights landing in Washington, D.C.. Availability may vary depending on flight origin and airline.

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