Cheap flights from Ottawa to Washington, D.C. from $178
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 5/17. 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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WestJet flights from Ottawa to Washington, D.C. Dulles Intl Airport
Our best WestJet deals on Ottawa to Washington, D.C. Dulles Intl Airport flight tickets
Porter Airlines flights from Ottawa to Washington, D.C. Dulles Intl Airport
Our best Porter Airlines deals on Ottawa to Washington, D.C. Dulles Intl Airport flight tickets
See travel insights to Washington, D.C. from
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
What is the cheapest month to fly to Washington, D.C. Dulles Intl Airport?
In general, March 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 $317. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of March, then flying in June is also cheap. Prices for this month can be found on momondo for an average of $322.
What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?
Our data shows that Wednesday 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 $649. When flying out on a Monday, 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 $755.
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 evening is the least expensive time of day to depart. momondo users have found prices as low as $595 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $750 on average. Flights to Washington, D.C. Dulles Intl Airport from Ottawa in the morning 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
How far in advance should I book a flight to Washington, D.C. Dulles Intl Airport?
You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from Ottawa when booking 25 weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $369 when searching 25 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from Ottawa for as low as $271 on momondo.
What cabin class options are available on Ottawa to Washington, D.C. Dulles Intl flights?
There are 4 cabin classes available to choose from on Ottawa to Washington, D.C. Dulles Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Ottawa to Washington, D.C. Dulles Intl?
Porter Airlines, Air Canada, and United Airlines are the most popular carriers operating from Ottawa to Washington, D.C. Dulles Intl
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 59% 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 day?
As of May 2025, there are 5 flights per day flying from Ottawa to Washington, D.C. Dulles Intl Airport. The most common time of day flights depart is 9:00AM, with 35% of flights taking off at noon.
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 41 per week as of May 2025. The most frequent departure day is Mon, with 15% of weekly flights leaving on this day.
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
Find info about flight duration, direct flights, and airports for your flight from Ottawa to Washington, D.C. Dulles Intl Airport
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 3 operators available for flights from Ottawa Airport to Washington, D.C. Dulles Intl Airport as of May 2025.
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 Canadair (Bombardier) Regional Jet CRJ-550 (41.73% of total bookings). The next most popular plane models are Embraer 195 E2 (11.22%), Canadair (Bombardier) Regional Jet 900 (10.04%), and Airbus A319 (8.27%).
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 Air Canada (53% of total bookings). The next most popular airlines are Porter Airlines (28%) and United Airlines (19%).
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 | ||
|---|---|---|---|---|---|
| PriceFrom $197 | Free Cancellation | Rating 8.0 285 reviews | |||
| PriceFrom $240 | Free Cancellation | Rating 7.4 8,696 reviews | |||
| PriceFrom $277 | Free Cancellation | Rating 7.0 9,252 reviews |
United Airlines Flights From Ottawa to Washington, D.C. Dulles Intl Airport
Across 20 United Airlines flights from Ottawa to Washington, D.C. Dulles Intl Airport this week, the average price was $465, with the best United Airlines deals starting from $240 round-trip. 8,696 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 (7.0/10 from 9,254 reviews) operates around 21 flights from Ottawa to Washington, D.C. Dulles Intl Airport in any given week. The average Air Canada airfare for this route is around $486, with deals from around $277 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.
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Why should I use momondo to find a flight deal from Ottawa to Washington, D.C.?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ottawa to Washington, D.C.. momondo saves you time and could save you money on your trip.
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.