CA $305 Cheap Flights from Ottawa (YOW) to Washington (IAD)

You can find cheap one-way flights from CA $305 and cheap return flights CA $430 YOW to IAD with Expedia. One-way flights typically cost between CA$365 and CA$1080, and return flights often range between CA$579 and CA$1903. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when YOW to IAD ticket fares go up or down.

If you're looking for the most budget-friendly time to fly from Ottawa Macdonald-Cartier International Airport (YOW) to Washington Dulles International Airport (IAD), September is typically the cheapest month. You can expect average return flights to be around CA$515. Other great months to find deals on this route include February and April.

There are 2 airlines offering direct flights from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Washington, DC (IAD-Washington Dulles Intl.). Here are the carriers:

* United operates 30 direct flights from YOW to IAD every week.
* Air Canada operates 7 direct flights from YOW to IAD every week.

Passaredo Transportes Aereos offers one of the cheapest connecting return flights with a layover in Boston (BOS-Logan Intl.), starting from around CA$518. United is one of the cheapest airlines offering nonstop return flights from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Washington, DC (IAD-Washington Dulles Intl.), with tickets starting from around CA$540 for flights that can be booked for departure within the next year. These prices are per adult for economy/coach class. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.

To find a cheap flight from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Washington, DC (IAD-Washington Dulles Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.

The best airline to fly with from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Washington, DC (IAD-Washington Dulles Intl.) will differ from traveler to traveler. If you like to fly early, United offers early morning flights. If price is the most important factor, United typically offers the lowest fares. Air Canada offers the most daily flights from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Washington, DC (IAD-Washington Dulles Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.

The cheapest months to fly from Ottawa Macdonald-Cartier International Airport (YOW) to Washington Dulles International Airport (IAD) are typically September and February, with average return flights around CA$515. The most popular months for this route are November and June, which means you'll likely find plenty of flight options during these times. While there isn't a single month that is both the cheapest and most popular, September offers a good balance of lower prices and pleasant travel conditions before the winter chill or summer heat.

You'll find approximately 4 nonstop flights per day from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Washington, DC (IAD-Washington Dulles Intl.). For even more choices, look at flights that include layovers, as there are around 31 connecting flights per day. Some common connection points include Pearson Intl. (YYZ), Pierre Elliott Trudeau Intl. (YUL), and Liberty Intl. (EWR).

The earliest flight from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Washington, DC (IAD-Washington Dulles Intl.) typically departs around 5:00 AM. This service is operated by Air Canada. This is a seasonal service, active in February and March. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.

You'll typically find the most flights from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Washington, DC (IAD-Washington Dulles Intl.) on a Thursday, with around 34 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include Air Canada, United, and Porter Airlines. Flight schedules are quite consistent throughout the week, so you'll have plenty of options no matter which day you choose to fly.

The most popular departure times for flights from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Washington, DC (IAD-Washington Dulles Intl.) are in the morning, between 9am and 12pm. Many major carriers, including Air Canada, United and Porter Airlines, offer flights during this window. Many travellers prefer these times as they allow for an early start to their journey, getting you to your destination with plenty of time left in the day.

When flying from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Washington, DC (IAD-Washington Dulles Intl.), you have a few options. A non-stop flight typically takes around 1 hour 48 minutes. If you opt for a one-stop flight, your travel time will be longer, usually around 5 hours 30 minutes. For flights with two or more stops, expect a journey of about 10 hours 30 minutes. The distance between these two airports is approximately 723 kilometers. Keep in mind that actual flight times can vary due to factors like routing, weather, and wind patterns.

You can fly business class or first class between YOW and IAD. You can fly business class with Air Canada and United.

First class cabins are available on United.

A direct, return business class ticket from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Washington, DC (IAD-Washington Dulles Intl.) typically costs between CA$1,141 - CA$1,545. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between YOW to IAD if you opt for a connecting flight.

It's easy to earn miles on a Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Washington, DC (IAD-Washington Dulles Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.

*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.

If you're planning to travel to Washington from Macdonald-Cartier Intl. (YOW), you can fly directly into Washington Dulles Intl. (IAD). Some flights may connect through major hubs like Pearson Intl. (YYZ), Liberty Intl. (EWR), or O'Hare Intl. (ORD) before reaching Washington. Compare routes and airports on Expedia to find the best flight options for your travel plans.

Typically, booking a last minute flight from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Washington, DC (IAD-Washington Dulles Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.

Securing a Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Washington, DC (IAD-Washington Dulles Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.

If you booked your Ottawa, ON (YOW-Macdonald-Cartier Intl.) to Washington, DC (IAD-Washington Dulles Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.