Cheap flights from Ottawa to Washington, D.C.

Flight deals from Ottawa to Washington, D.C.

Below you can see the best deals on flights Ottawa — Washington, D.C. for upcoming dates. Direct and connecting flights from various airlines — compare prices and choose the right ticket.

The lowest price for the next 2 months is on 3 October, from $187.

Top 10 cheap flights from Ottawa to Washington, D.C.

Ottawa — Washington, D.C.

06:55—15:10

11 Sep 2026

8 h 15 m

1 stop

Ottawa — Washington, D.C.

18:25—10:45

13 Sep 2026

16 h 20 m

1 stop

Ottawa — Washington, D.C.

18:25—15:10

13 Sep 2026

20 h 45 m

1 stop

Ottawa — Washington, D.C.

06:55—10:45

13 Sep 2026

27 h 50 m

1 stop

Ottawa — Washington, D.C.

18:25—10:45

10 Sep 2026

16 h 20 m

1 stop

Ottawa — Washington, D.C.

18:25—15:10

10 Sep 2026

20 h 45 m

1 stop

Ottawa — Washington, D.C.

06:55—15:10

14 Sep 2026

8 h 15 m

1 stop

Ottawa — Washington, D.C.

18:25—10:45

12 Sep 2026

16 h 20 m

1 stop

Ottawa — Washington, D.C.

18:25—10:45

9 Sep 2026

16 h 20 m

1 stop

Ottawa — Washington, D.C.

18:25—15:10

9 Sep 2026

20 h 45 m

1 stop

Prices were found in the last 72 hours and may change — check the exact price when you continue.

About the Ottawa — Washington, D.C. flight

Looking for cheap flights from Ottawa to Washington, D.C.? Compare fares from different airlines, check the flight schedule and travel time — and book your Ottawa — Washington, D.C. ticket online at the best price.

The route has direct flights — around 103 flights per week, flights are operated by United Airlines, Air Canada, a nonstop flight takes about 1 h 35 min, the distance between the cities is around 732 km.

Planning your trip? You may find our Washington, D.C. travel guide, how to get from the airport into town and Washington, D.C. weather forecast useful. To catch a low fare, use the low-price calendar and the monthly price chart on this page.

from $187Min. price

OctoberCheapest

AugustPeak season

YesDirect flights

732 kmDistance

1 h 35 minTravel time

2Airlines

103 / wkFlights

Flight schedule from Ottawa to Washington, D.C.

The table shows direct flights from Ottawa to Washington, D.C. on the selected date. The flight takes approximately 1 h 35 min. Regular flights are operated by United Airlines and Air Canada. Departures from Ottawa Macdonald–Cartier International Airport airports, arrivals at Washington Dulles International Airport, Baltimore/Washington International Thurgood Marshall Airport and Ronald Reagan National Airport.

For each flight, the following details are shown: departure time (local), arrival city and airport, flight number and airline, terminal or gate, and status. Click on a flight to open its details and go to ticket search. To view flights on a different day, change the date above the table.

Today

Any time

Last update: 14 Aug 2026

Airline

Flight

Departure

Arrival

Duration

Days

Status

Below is a calendar of the lowest flight ticket prices for Ottawa — Washington, D.C. by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from $187 in October, and the most expensive are around $250 in August. If your travel dates are flexible, the calendar will help you find the best price for your preferred period. To view round-trip fares, switch to the "Round trip" tab above the calendar, select your departure date — and the right-hand calendar will highlight the lowest prices for return flights on each day.

Prices by month

Average one-way fares from Ottawa to Washington, D.C. by month. Tickets are usually cheapest in January (around $175) and priciest in December (about $248) — use the table and chart below to pick the best time to fly.

Month	Average price	Level	Month	Average price	Level	Month	Average price	Level
Jan	$175	low	May	$230	high	Sep	$212	medium
Feb	$181	low	Jun	$205	medium	Oct	$242	high
Mar	$193	medium	Jul	$236	high	Nov	$236	high
Apr	$224	high	Aug	$205	medium	Dec	$248	high

Seasonality estimate: no exact data found for this route; prices are calculated based on typical seasonal trends for this direction.

When to fly

Weather in Washington, D.C.: it is warmest in July (up to 32 °C on average) and coolest in January (around 7 °C). The driest month is October.

Tickets are usually cheapest in October and most expensive in August. Compare prices and weather by month in the charts below to pick the best time to fly.

Temperature · Washington, D.C.

Dry and wet days · Washington, D.C.

Wind speed and direction · Washington, D.C.

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Destination

How to get the best deal on a Ottawa — Washington, D.C. ticket

Book ahead: fares for Ottawa — Washington, D.C. are usually lower 3–8 weeks before departure than at the last minute.
Play with your dates — Tuesday, Wednesday and Saturday departures are often cheaper than Friday and Sunday.
The cheapest month to fly to Washington, D.C. is usually October — plan your trip around it if your dates are flexible.
Compare direct and connecting flights: nonstop is faster, while a connection is sometimes noticeably cheaper.
Watch the low-price calendar and the monthly price trend on this page — they make it easier to catch a good date.
Travelling light? Pick a cabin-baggage-only fare — tickets without checked luggage are noticeably cheaper.
Get to the airport in good time — about 2–3 hours before an international departure and roughly an hour before a domestic one.

Flights on the Ottawa — Washington, D.C. route are operated by 2 airlines; United Airlines runs the most flights (around 53% of all flights). Compare carriers, flight shares and schedules below.

United AirlinesUA
18x/week
WebsiteFleet: 956165M pax/year
- Direct flight YOW → IAD17x/week
  Duration
  1h 45m
  Days
  MTWTFSS
- Direct flight YOW → DCA1x/week
  Duration
  1h 36m
  Days
  MTWTFSS
53.4%Open →
Air CanadaAC
16x/week
WebsiteFleet: 20346M pax/year
- Direct flight YOW → IAD11x/week
  Duration
  1h 38m
  Days
  MTWTFSS
- Direct flight YOW → DCA5x/week
  Duration
  1h 35m
  Days
  MTWTFSS
46.6%Open →

Cities and airports on the Ottawa — Washington, D.C. route

Flights Ottawa — Washington, D.C. depart from Ottawa Macdonald–Cartier International Airport and arrive at Washington Dulles International Airport, Baltimore/Washington International Thurgood Marshall Airport and Ronald Reagan National Airport. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.

Departure

Ottawa

YOW

Canada

About the city How to get there Weather All about the country Canada

Arrival

Washington, D.C.

WAS

United States

About the city How to get there Weather All about the country United States

Departure airports

Ottawa Macdonald–Cartier International AirportYOW
About the airport

Arrival airports

Washington Dulles International AirportIAD
About the airport
Baltimore/Washington International Thurgood Marshall AirportBWI
About the airport
Ronald Reagan National AirportDCA
About the airport

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Frequently asked questions about the Ottawa — Washington, D.C. flight

How long is the flight from Ottawa to Washington, D.C.?

A nonstop Ottawa — Washington, D.C. flight takes about 1 h 35 min — the distance between the cities is around 732 km.

How far is it from Ottawa to Washington, D.C.?

The distance from Ottawa to Washington, D.C. is about 732 km, which a nonstop flight covers in around 1 h 35 min.

Are there direct flights from Ottawa to Washington, D.C.?

Yes, there are nonstop flights Ottawa — Washington, D.C. — around 103 flights per week.

Which airlines fly from Ottawa to Washington, D.C.?

Airlines operating Ottawa — Washington, D.C. include United Airlines, Air Canada. See the full list with schedules in the "Airlines" section on this page.

Which airports do Ottawa — Washington, D.C. flights use?

Flights from Ottawa depart from Ottawa Macdonald–Cartier International Airport, and arrive at Washington Dulles International Airport, Baltimore/Washington International Thurgood Marshall Airport, Ronald Reagan National Airport. If a city has more than one airport, check which one your ticket uses before you travel.

How much is a ticket from Ottawa to Washington, D.C.?

The price of a Ottawa — Washington, D.C. ticket depends on your travel date, season and demand: it is usually cheapest to fly in October, and most expensive in August. Tickets typically cost between $187 and $250. Check the current lowest fare and low-price calendar on this page.

When is the best time to book flights Ottawa — Washington, D.C.?

Flights Ottawa — Washington, D.C. are usually cheaper when booked in advance — a few weeks before departure and away from peak dates; the most budget-friendly month to fly is October. Compare prices by month in the price trend chart on this page.

How can I find the cheapest flights from Ottawa to Washington, D.C.?

To catch a low fare Ottawa — Washington, D.C., book a few weeks in advance, keep your dates flexible, and compare airlines and connecting options. The low-price calendar and monthly price chart on this page show the cheapest days and months at a glance: the most budget-friendly month to fly is usually October.

How early should I arrive at the airport?

For international flights, plan to be at the airport about 2–3 hours before departure, and around an hour before a domestic flight. Allow extra time during busy travel seasons and at large hubs, where check-in and security lines can be longer.

Cheap flights from Ottawa to Washington, D.C.

Flight deals from Ottawa to Washington, D.C.

Top 10 cheap flights from Ottawa to Washington, D.C.

Ottawa — Washington, D.C.

Ottawa — Washington, D.C.

Ottawa — Washington, D.C.

Ottawa — Washington, D.C.

Ottawa — Washington, D.C.

Ottawa — Washington, D.C.

Ottawa — Washington, D.C.

Ottawa — Washington, D.C.

Ottawa — Washington, D.C.

Ottawa — Washington, D.C.

Top 10 direct flights from Ottawa to Washington, D.C.

Ottawa — Washington, D.C.

Ottawa — Washington, D.C.

Ottawa — Washington, D.C.

Ottawa — Washington, D.C.

Ottawa — Washington, D.C.

Ottawa — Washington, D.C.

Ottawa — Washington, D.C.

Ottawa — Washington, D.C.

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Ottawa — Washington, D.C.

Ottawa to Washington, D.C.: departing soon

Ottawa — Washington, D.C.

Ottawa — Washington, D.C.

Ottawa — Washington, D.C.

Ottawa — Washington, D.C.

Ottawa — Washington, D.C.

Ottawa — Washington, D.C.

Ottawa — Washington, D.C.

Ottawa — Washington, D.C.

Ottawa — Washington, D.C.

Ottawa — Washington, D.C.

About the Ottawa — Washington, D.C. flight

Facts about this route

Flight schedule from Ottawa to Washington, D.C.

Flight ticket prices by day: Ottawa — Washington, D.C.

Prices by month

When to fly

Temperature · Washington, D.C.

Dry and wet days · Washington, D.C.

Wind speed and direction · Washington, D.C.

We'll let you know if you need a visa

How to get the best deal on a Ottawa — Washington, D.C. ticket

Cities and airports on the Ottawa — Washington, D.C. route

Ottawa

Washington, D.C.

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Where else you can fly from Ottawa

Where else you can fly from Washington, D.C.

Other popular routes

Other popular routes