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Cheap Flights from Buffalo (BUF) to Washington D.C. (BWI)

Compare Buffalo Niagara to Baltimore Washington International flight deals

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

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Flight deals from Buffalo Niagara to Baltimore Washington International

Looking for a cheap last-minute deal or the best return flight from Buffalo Niagara Airport to Baltimore Washington International Airport? If you want to travel next month, return fares start from $281. Find the lowest prices on one-way and return tickets right here.
Washington D.C..$281 per passenger.Departing Wed, 19 Aug, returning Thu, 3 Sep.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Buffalo Niagara on Wed, 19 Aug, arriving in Baltimore Washington International.Inbound direct flight with Southwest Airlines departs from Baltimore Washington International on Thu, 3 Sep, arriving in Buffalo Niagara.Price includes taxes and charges.From $281, select.
Washington D.C..$281 per passenger.Departing Sat, 19 Sep, returning Mon, 21 Sep.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Buffalo Niagara on Sat, 19 Sep, arriving in Baltimore Washington International.Inbound direct flight with Southwest Airlines departs from Baltimore Washington International on Mon, 21 Sep, arriving in Buffalo Niagara.Price includes taxes and charges.From $281, select.
Washington D.C..$281 per passenger.Departing Tue, 1 Dec, returning Tue, 8 Dec.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Buffalo Niagara on Tue, 1 Dec, arriving in Baltimore Washington International.Inbound direct flight with Southwest Airlines departs from Baltimore Washington International on Tue, 8 Dec, arriving in Buffalo Niagara.Price includes taxes and charges.From $281, select.
Washington D.C..$281 per passenger.Departing Wed, 30 Sep, returning Thu, 1 Oct.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Buffalo Niagara on Wed, 30 Sep, arriving in Baltimore Washington International.Inbound direct flight with Southwest Airlines departs from Baltimore Washington International on Thu, 1 Oct, arriving in Buffalo Niagara.Price includes taxes and charges.From $281, select.
Washington D.C..$281 per passenger.Departing Wed, 19 Aug, returning Wed, 19 Aug.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Buffalo Niagara on Wed, 19 Aug, arriving in Baltimore Washington International.Inbound direct flight with Southwest Airlines departs from Baltimore Washington International on Wed, 19 Aug, arriving in Buffalo Niagara.Price includes taxes and charges.From $281, select.
Washington D.C..$281 per passenger.Departing Thu, 26 Nov, returning Thu, 3 Dec.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Buffalo Niagara on Thu, 26 Nov, arriving in Baltimore Washington International.Inbound direct flight with Southwest Airlines departs from Baltimore Washington International on Thu, 3 Dec, arriving in Buffalo Niagara.Price includes taxes and charges.From $281, select.
Washington D.C..$281 per passenger.Departing Tue, 20 Oct, returning Thu, 22 Oct.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Buffalo Niagara on Tue, 20 Oct, arriving in Baltimore Washington International.Inbound direct flight with Southwest Airlines departs from Baltimore Washington International on Thu, 22 Oct, arriving in Buffalo Niagara.Price includes taxes and charges.From $281, select.
Washington D.C..$342 per passenger.Departing Fri, 6 Nov, returning Mon, 9 Nov.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Buffalo Niagara on Fri, 6 Nov, arriving in Baltimore Washington International.Inbound indirect flight with Frontier Airlines, departs from Baltimore Washington International on Mon, 9 Nov, arriving in Buffalo Niagara.Price includes taxes and charges.From $342, select.
Washington D.C..$378 per passenger.Departing Fri, 24 Jul, returning Tue, 28 Jul.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Buffalo Niagara on Fri, 24 Jul, arriving in Baltimore Washington International.Inbound indirect flight with Frontier Airlines, departs from Baltimore Washington International on Tue, 28 Jul, arriving in Buffalo Niagara.Price includes taxes and charges.From $378, select.
Washington D.C..$379 per passenger.Departing Mon, 27 Jul, returning Mon, 3 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Buffalo Niagara on Mon, 27 Jul, arriving in Baltimore Washington International.Inbound indirect flight with Frontier Airlines, departs from Baltimore Washington International on Mon, 3 Aug, arriving in Buffalo Niagara.Price includes taxes and charges.From $379, select.
Washington D.C..$399 per passenger.Departing Mon, 16 Nov, returning Fri, 20 Nov.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Buffalo Niagara on Mon, 16 Nov, arriving in Baltimore Washington International.Inbound direct flight with Southwest Airlines departs from Baltimore Washington International on Fri, 20 Nov, arriving in Buffalo Niagara.Price includes taxes and charges.From $399, select.
Washington D.C..$576 per passenger.Departing Fri, 2 Apr, returning Sun, 4 Apr.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Buffalo Niagara on Fri, 2 Apr, arriving in Baltimore Washington International.Inbound direct flight with Southwest Airlines departs from Baltimore Washington International on Sun, 4 Apr, arriving in Buffalo Niagara.Price includes taxes and charges.From $576, select.
Washington D.C..$778 per passenger.Departing Fri, 31 Jul, returning Sun, 2 Aug.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Buffalo Niagara on Fri, 31 Jul, arriving in Baltimore Washington International.Inbound direct flight with Southwest Airlines departs from Baltimore Washington International on Sun, 2 Aug, arriving in Buffalo Niagara.Price includes taxes and charges.From $778, select.
Washington D.C..$925 per passenger.Departing Wed, 29 Jul, returning Thu, 30 Jul.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Buffalo Niagara on Wed, 29 Jul, arriving in Baltimore Washington International.Inbound direct flight with Southwest Airlines departs from Baltimore Washington International on Thu, 30 Jul, arriving in Buffalo Niagara.Price includes taxes and charges.From $925, select.

Find the cheapest month to fly from Buffalo Niagara to Baltimore Washington International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Buffalo Niagara to Baltimore Washington International flights are currently cheapest in August.
Jul
from $378
Aug
from $281
Sep
from $281
Oct
from $281
Nov
from $342
Dec
from $281
Jan
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Feb
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Mar
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Apr
from $576
May
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Jun
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Direct flights from Buffalo Niagara to Baltimore Washington International

Buffalo Niagara to Baltimore Washington International: Alternative routes

Compare routes from Buffalo Niagara 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.
Closest
from $308
Search flights

Washington Dulles

37km from central Washington D.C.
from $311
Search flights

Baltimore Washington International

44km from central Washington D.C.
Cheapest
from $281
Search flights

Buffalo to Washington D.C.: Flight information

The things to know before you go.
Cheapest flight found$281
Cheapest month to flySeptember
Average flight time1 hr, 18 mins
Most popular airlineSouthwest Airlines
Average flights per week41

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

The best price we found for a return flight from Buffalo Niagara to Baltimore Washington International is $281. 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.
1 hour and 18 minutes is the average flight time from Buffalo Niagara to Baltimore Washington International.
Southwest Airlines flies direct from Buffalo Niagara to Baltimore Washington International.
As of July 2026, there are 41 flights per week flying from Buffalo Niagara to Baltimore Washington International.
The cheapest month to fly from Buffalo Niagara to Baltimore Washington International is usually September.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Buffalo Niagara Airport to Baltimore Washington International Airport on Saturday, 19 September 2026.
Yes – the average flight time is 1 hour and 18 minutes.
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.

Currently, Southwest Airlines offers the cheapest flight tickets to Baltimore Washington International.

Travelling from Buffalo Niagara Airport (BUF) to Baltimore Washington International Airport (BWI): what you need to know

  • The average duration of a direct flight from Buffalo Niagara Airport to Baltimore Washington International Airport is 1 hour 15 minutes.

  • Buffalo and Washington DC follow the same timezone, UTC-5.

  • Every week, there are 19 Buffalo Niagara Airport to Baltimore Washington International Airport flights. If you want to be on board as early as possible, select the 05:30 Southwest Airlines flight. If you'd rather make the most of your time before flying, the last departure is at 20:05 with Southwest Airlines.

  • Your BUF to BWI flight won't wait if you're running late, so get to the airport with time to spare. Arrive up to one hour in advance for domestic flights and two hours ahead when you're flying internationally.

  • During popular months such as August, you'll want to get to the airport earlier than normal. Plan to arrive two hours before a domestic departure and four hours ahead for international flights when you fly during peak periods in general.

  • Southwest Airlines offers direct flights from Buffalo Niagara Airport to Baltimore Washington International Airport. Book with this popular airline, then get ready to check out the sights in Washington DC — and maybe even more of the United States if your schedule allows.

  • The majority of travellers choose to travel with Southwest Airlines on this route.

  • With an impressive 82.03% of services landing on schedule, Southwest Airlines is the most punctual carrier offering BUF to BWI flights.

  • Consider adding a stopover when booking your ticket from Buffalo Niagara Airport to Baltimore Washington International Airport. Simply uncheck 'Direct flights only' to break up your journey, or perhaps see a new city along the way. Here's where you can stop between BUF and BWI:

    • Charlotte Douglas Airport

    • Detroit Wayne County Airport

    • Raleigh / Durham Airport

How to find the cheapest flights from Buffalo Niagara Airport (BUF) to Baltimore Washington International Airport (BWI)

  • $113 is currently the lowest price for a one-way Buffalo Niagara Airport to Baltimore Washington International Airport flight. Return flights start at $281. These fares can change based on availability.

  • Get cheap tickets from BUF to BWI by booking one month ahead. Based on our research, that's the sweet spot for finding a bargain.

  • The cheapest month for flights from Buffalo Niagara Airport to Baltimore Washington International Airport is June. Use the 'Whole month' tool to find the lowest airfares if you have a flexible schedule.

  • There's no need to check back in every day to see if fares have gone down when you create a Price Alert. We'll let you know the moment there's a new deal on cheap flights from BUF to BWI.

  • Lock in the perfect flight for you with the help of the filters. To see the 'Fastest,' 'Cheapest' or 'Best' flights from Buffalo Niagara Airport to Baltimore Washington International Airport, use the 'Sort by' tool. You can also filter results by airline, arrival and departure times, and journey duration.

Handy information about Buffalo Niagara Airport (BUF)

  • BUF is located at Genesee Street.

  • When it comes to Buffalo Niagara Airport's on-time performance, 74% of flights meet their scheduled arrival time.

  • Central Buffalo to Buffalo Niagara Airport is around 16 kilometres. Depending on traffic, it'll take about 20 minutes to get there if you're ride-sharing, catching a taxi or driving.

  • Expect a trip time of about 40 minutes on public transport.

  • Taking an early flight from Buffalo Niagara Airport to Baltimore Washington International Airport? Avoid the last-minute rush to the terminal (and catch some extra z's) by choosing one of these stays close to BUF:

Arriving at Baltimore Washington International Airport (BWI)

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

  • Baltimore Washington International Airport is roughly 48 kilometres from central Washington DC. The drive time takes around 40 minutes.

  • It typically takes 50 minutes if you're using public transport.

When to fly to Baltimore Washington International Airport (BWI)

  • It's time to pick your dates for your flight from Buffalo Niagara Airport to Baltimore Washington International Airport. July is the busiest month to head to Washington DC. If you prefer a quieter vibe, go in March.

  • Before locking in your flight from Buffalo Niagara Airport to Baltimore Washington International Airport, think about the type of weather you like. July is the warmest month in Washington DC, with temperatures ranging from 19ºC (66ºF) to 33ºC (91ºF).

  • January sees average temperatures of between -6ºC (21ºF) and 10ºC (50ºF). Search for cheap tickets from BUF to BWI sometime around then if you like travelling in cooler conditions.

Explore more of the United States

  • New York is just one of the many places in the United States waiting to be explored once you've taken in the sights of Washington DC. Around 322 kilometres away to the north-east, check out popular attractions including Central Park, Statue of Liberty and Metropolitan Museum of Art.

  • Philadelphia is another must-experience destination in the United States and is around 193 kilometres north-east of Washington DC. No trip is complete without dropping by Independence Hall, Liberty Bell and Philadelphia Museum of Art.

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