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Cheap Flights from Ottawa (YOWA) to Washington D.C. (BWI)

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      Travellers and cabin class, 1 Adult, Economy

      Compare Ottawa to Baltimore Washington International flight deals

      Find the cheapest month or even day of the year to fly to Baltimore Washington International

      Book the best Baltimore Washington International fare with no extra fees

      Flight deals from Ottawa to Baltimore Washington International

      Looking for a cheap last-minute deal or the best return flight from Ottawa to Baltimore Washington International Airport? If you want to travel next month, return fares start from $579. Find the lowest prices on one-way and return tickets right here.
      Washington D.C..$579 per passenger.Departing Tue, 13 Oct, returning Tue, 20 Oct.Return flight with Air Canada and Frontier Airlines.Outbound indirect flight with Air Canada, departs from Ottawa International on Tue, 13 Oct, arriving in Baltimore Washington International.Inbound indirect flight with Frontier Airlines, departs from Baltimore Washington International on Tue, 20 Oct, arriving in Ottawa International.Price includes taxes and charges.From $579, select.
      Washington D.C..$704 per passenger.Departing Wed, 23 Sep, returning Wed, 30 Sep.Return flight with Air Canada and Frontier Airlines.Outbound indirect flight with Air Canada, departs from Ottawa International on Wed, 23 Sep, arriving in Baltimore Washington International.Inbound indirect flight with Frontier Airlines, departs from Baltimore Washington International on Wed, 30 Sep, arriving in Ottawa International.Price includes taxes and charges.From $704, select.
      Washington D.C..$936 per passenger.Departing Thu, 5 Nov, returning Mon, 9 Nov.Return flight with United.Outbound indirect flight with United, departs from Ottawa International on Thu, 5 Nov, arriving in Baltimore Washington International.Inbound indirect flight with United, departs from Baltimore Washington International on Mon, 9 Nov, arriving in Ottawa International.Price includes taxes and charges.From $936, select.
      Washington D.C..$937 per passenger.Departing Tue, 27 Oct, returning Mon, 2 Nov.Return flight with United.Outbound indirect flight with United, departs from Ottawa International on Tue, 27 Oct, arriving in Baltimore Washington International.Inbound indirect flight with United, departs from Baltimore Washington International on Mon, 2 Nov, arriving in Ottawa International.Price includes taxes and charges.From $937, select.
      Washington D.C..$966 per passenger.Departing Tue, 29 Sep, returning Mon, 5 Oct.Return flight with United.Outbound indirect flight with United, departs from Ottawa International on Tue, 29 Sep, arriving in Baltimore Washington International.Inbound indirect flight with United, departs from Baltimore Washington International on Mon, 5 Oct, arriving in Ottawa International.Price includes taxes and charges.From $966, select.
      Washington D.C..$1,279 per passenger.Departing Wed, 6 Jan, returning Thu, 14 Jan.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Ottawa International on Wed, 6 Jan, arriving in Baltimore Washington International.Inbound indirect flight with WestJet, departs from Baltimore Washington International on Thu, 14 Jan, arriving in Ottawa International.Price includes taxes and charges.From $1,279, select.
      Washington D.C..$1,447 per passenger.Departing Sun, 31 Jan, returning Mon, 1 Feb.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Ottawa International on Sun, 31 Jan, arriving in Baltimore Washington International.Inbound indirect flight with WestJet, departs from Baltimore Washington International on Mon, 1 Feb, arriving in Ottawa International.Price includes taxes and charges.From $1,447, select.
      Washington D.C..$1,454 per passenger.Departing Thu, 18 Mar, returning Sun, 21 Mar.Return flight with United.Outbound indirect flight with United, departs from Ottawa International on Thu, 18 Mar, arriving in Baltimore Washington International.Inbound indirect flight with United, departs from Baltimore Washington International on Sun, 21 Mar, arriving in Ottawa International.Price includes taxes and charges.From $1,454, select.
      Washington D.C..$1,581 per passenger.Departing Fri, 25 Dec, returning Wed, 6 Jan.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Ottawa International on Fri, 25 Dec, arriving in Baltimore Washington International.Inbound indirect flight with WestJet, departs from Baltimore Washington International on Wed, 6 Jan, arriving in Ottawa International.Price includes taxes and charges.From $1,581, select.
      Washington D.C..$1,814 per passenger.Departing Tue, 22 Dec, returning Wed, 30 Dec.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Ottawa International on Tue, 22 Dec, arriving in Baltimore Washington International.Inbound indirect flight with WestJet, departs from Baltimore Washington International on Wed, 30 Dec, arriving in Ottawa International.Price includes taxes and charges.From $1,814, select.

      Find the cheapest month to fly from Ottawa to Baltimore Washington International

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Ottawa to Baltimore Washington International flights are currently cheapest in October.
      Sep
      from $704
      Oct
      from $579
      Nov
      from $936
      Dec
      from $1,813
      Jan
      from $1,279
      Feb
      Find prices
      Mar
      from $1,454
      Apr
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      May
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      Jun
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      Jul
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      Aug
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      Ottawa to Baltimore Washington International: Alternative routes

      Compare routes from Ottawa to Washington D.C. below. You may find an airport to fly into that's cheaper, faster, or easier than Baltimore Washington International.

      Washington Ronald Reagan

      5km from central Washington D.C.
      ClosestCheapest
      from $423
      Search flights

      Washington Dulles

      37km from central Washington D.C.
      from $426
      Search flights

      Baltimore Washington International

      44km from central Washington D.C.
      from $579
      Search flights

      Ottawa to Washington D.C.: Flight information

      The things to know before you go.
      Cheapest flight found$579
      Cheapest month to flyOctober

      Finding cheap flights from Ottawa to Baltimore Washington International: Frequently asked questions

      The best price we found for a return flight from Ottawa to Baltimore Washington International is $579. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
      Currently, there are no airlines that fly direct from Ottawa to Baltimore Washington International. But we found flights with one stop from $579.
      As of September 2026, there are no flights flying from Ottawa to Baltimore Washington International.
      The cheapest month to fly from Ottawa to Baltimore Washington International is usually October.
      After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Ottawa to Baltimore Washington International Airport on Tuesday, 13 October 2026.
      No airlines currently offer direct flights between Ottawa and Baltimore Washington International Airport. Most routes have one or more stops.
      We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Baltimore Washington International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

      We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Washington D.C. is around 40 days in advance, so don’t leave your flight to the last minute.

      The cheapest airline that flies to Baltimore Washington International is Air Canada .

      Flying from Ottawa to Baltimore Washington International Airport (BWI): What you need to know

      • Washington DC (where Baltimore Washington International Airport is located) and Ottawa share the UTC-5 timezone. With no time difference, coordinating plans between the cities is hassle-free.

      • To ensure you get on your flight from Ottawa to BWI, leave plenty of time for things like check-in and baggage drop. Arriving two hours before international departures and one hour before domestic flights is the general travel rule.

      • Be prepared for longer queues during popular months such as August and other peak periods. Arriving up to four hours in advance for international flights and two hours for a domestic departure is a good idea.

      Airports in Ottawa

      Ottawa Macdonald-Cartier International Airport (YOW)

      • The journey from central Ottawa to YOW takes about 35 minutes by public transport. If you ride-share, drive or grab a taxi, you'll cover the 14 kilometres in 20 minutes or so, depending on traffic conditions.

      • In search of a convenient hotel near Ottawa Macdonald-Cartier International Airport? If you're catching an early flight from Ottawa to Baltimore Washington International Airport, these stays will have you sleeping a quick hop from check-in:

      • Of all flights departing from Ottawa Macdonald-Cartier International Airport, 58% arrive on time at their destination.

      • You'll find YOW at 50 Airport Road.

      About Baltimore Washington International Airport (BWI)

      Getting from Baltimore Washington International Airport (BWI) to central Washington DC

      • From Baltimore Washington International Airport, central Washington DC is around 48 kilometres away. It takes about 40 minutes to reach the city centre by car.

      • It takes roughly 50 minutes when travelling by public transport.

      How to find the cheapest flights from Ottawa to Baltimore Washington International Airport (BWI)

      • $313 is the lowest price for a one-way ticket from Ottawa to Baltimore Washington International Airport. A return flight starts at $579. These fares may change based on availability and demand.

      • Don't wait until the last minute. You're more likely to find cheap flights from Ottawa to BWI if you book in advance. Airlines often offer some great early bird deals.

      • If you can be flexible with your trip dates, try using the 'Whole month' tool. It'll show you the cheapest price across each month when searching for your Ottawa to Baltimore Washington International Airport ticket.

      • Save time searching for cheap plane tickets from Ottawa to BWI by setting up a Price Alert. We'll send you an email or push notification on the app when prices go down.

      • Save on your flight from Ottawa to Baltimore Washington International Airport by using filters. Select your ideal departure time, duration and airlines, then sort the results by 'Cheapest' for the best deals.

      The best time to fly from Ottawa to Baltimore Washington International Airport (BWI)

      • It's time to decide your travel dates for your flight from Ottawa to Baltimore Washington International Airport (BWI). October is the busiest month to visit Washington DC. If crowds aren't your thing, go in September.

      • Book a Ottawa to BWI plane ticket departing in July if you want to visit the city during its warmest month. You can expect temperatures in Washington DC to range from 19ºC (66ºF) to 33ºC (91ºF).

      • Search for cheap tickets from Ottawa to Baltimore Washington International Airport in January if you like travelling in cooler conditions. Temperatures are at their lowest then, ranging between -6ºC (21ºF) and 10ºC (50ºF).

      More about Washington DC

      Explore more of the United States

      • You've visited Washington DC, now it's time to discover other parts of the United States. Travel about 153 kilometres northeast to Philadelphia to check off its leading attractions. From Independence Hall to Liberty Bell and Philadelphia Museum of Art, there's plenty to keep you on the go.

      • If you're ready to explore another well-known destination in the United States, head for Virginia Beach, about 274 kilometres south of Washington DC. Virginia Beach Oceanfront, Virginia Beach Boardwalk and Resort Beach are highlights.

      Plan smart, explore more

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      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.