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$349+ Cheap flights from Baltimore (BWI) to Heathrow (LHR)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — LHR
May 9 — May 161
Sat 5/9
Sat 5/16
1 adult, Economy
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Find cheap flights from Baltimore to Heathrow with Cheapflights

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Cheapflights Tip: The best prices from Baltimore/Washington to London Heathrow are usually found in January or November, booked 57 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from Baltimore to Heathrow

Cheapest flights from Baltimore to Heathrow
Explore the most affordable flight options available from Baltimore to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 9, 2026.

This deal was found by Cheapflights users on 4/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/38:30 pm
BWI
-
LHR
1 stop10h 25m
Icelandair
Tue 5/51:05 pm
LHR
-
BWI
1 stop11h 20m
Icelandair
Deal found 4/4$672
This Ticket deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/58:30 pm
BWI
-
LHR
1 stop18h 50m
Icelandair
Sun 9/139:25 pm
LHR
-
BWI
1 stop27h 00m
Icelandair
Deal found 4/8$685
This Gotogate deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/18:30 pm
BWI
-
LHR
1 stop10h 25m
Icelandair
Thu 10/159:25 pm
LHR
-
BWI
1 stop27h 00m
Icelandair
Deal found 4/5$714
This deal was found by Cheapflights users on 4/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/28:30 pm
BWI
-
LHR
1 stop10h 25m
Icelandair
Tue 5/51:05 pm
LHR
-
BWI
1 stop11h 20m
Icelandair
Deal found 4/4$718
This CrystalTravel deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:40 pm
BWI
-
LHR
1 stop10h 10m
Icelandair
Wed 12/912:15 pm
LHR
-
BWI
1 stop11h 25m
Icelandair
Deal found 4/8$719
This Gotogate deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/88:30 pm
BWI
-
LHR
1 stop10h 25m
Icelandair
Tue 10/139:25 pm
LHR
-
BWI
1 stop27h 00m
Icelandair
Deal found 4/5$720
This CrystalTravel deal was found by Cheapflights users on 4/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/28:30 pm
BWI
-
LHR
1 stop10h 25m
Icelandair
Wed 10/71:05 pm
LHR
-
BWI
1 stop11h 20m
Icelandair
Deal found 4/4$721
This Gotogate deal was found by Cheapflights users on 4/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/87:40 pm
BWI
-
LHR
1 stop18h 50m
Icelandair
Wed 11/1812:15 pm
LHR
-
BWI
1 stop11h 25m
Icelandair
Deal found 4/4$722
This Gotogate deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/28:30 pm
BWI
-
LHR
1 stop10h 25m
Icelandair
Sat 10/101:05 pm
LHR
-
BWI
1 stop11h 20m
Icelandair
Deal found 4/5$723
This Gotogate deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2211:20 pm
BWI
-
LHR
1 stop31h 35m
Icelandair
Sat 10/3112:15 pm
LHR
-
BWI
1 stop11h 25m
Icelandair
Deal found 4/6$724
This Gotogate deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/88:30 pm
BWI
-
LHR
1 stop10h 25m
Icelandair
Mon 10/199:25 pm
LHR
-
BWI
1 stop29h 50m
Icelandair
Deal found 4/6$725

Find flight deals from Baltimore to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Baltimore (BWI) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 9, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$672

One-way from

$349
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$769
Provider with most accurate pricing for Baltimore/Washington-London Heathrow flight deals.
Search Deals
Provider most trusted by Cheapflights users for Baltimore/Washington-London Heathrow flights.
Search Deals
From Baltimore/Washington to London Heathrow
Search Deals
One-way flight from Baltimore/Washington to London Heathrow
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($156 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Baltimore to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 9, 2026.
Use the filters below to find and compare flights from Baltimore to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BaltimoreLondon

BWI - LHR

BWILHR

Baltimore/Washington

Wed 5/6

8:30 pm-8:20 pm

1 stop18h 50m

London Heathrow

Sun 5/10

1:05 pm-7:25 pm

1 stop11h 20m

$860

BaltimoreLondon

BWI - LHR

BWILHR

Baltimore/Washington

Sun 4/26

3:31 pm-6:55 am

1 stop10h 24m

London Heathrow

Tue 5/5

4:25 pm-7:40 pm

Nonstop8h 15m

$924

BaltimoreLondon

BWI - LHR

BWILHR

Baltimore/Washington

Wed 5/6

9:30 pm-9:50 am

Nonstop7h 20m

London Heathrow

Sun 5/17

4:55 pm-11:56 pm

1 stop12h 01m

$937

BaltimoreLondon

BWI - LHR

BWILHR

Baltimore/Washington

Wed 4/15

9:00 am-7:10 am

2 stops17h 10m

London Heathrow

Wed 4/29

8:40 am-8:17 pm

2 stops16h 37m

$991

BaltimoreLondon

BWI - LHR

BWILHR

Baltimore/Washington

Fri 4/24

11:08 am-5:55 am

2 stops13h 47m

London Heathrow

Sat 5/2

9:30 am-9:02 pm

2 stops16h 32m

$999

BaltimoreLondon

BWI - LHR

BWILHR

Baltimore/Washington

Sat 5/2

3:27 pm-11:55 am

1 stop15h 28m

London Heathrow

Sun 5/24

6:50 am-5:33 pm

2 stops15h 43m

$1,024

BaltimoreLondon

BWI - LHR

BWILHR

Baltimore/Washington

Wed 4/15

9:00 am-6:25 am

1 stop16h 25m

London Heathrow

Wed 4/22

6:30 am-4:49 pm

2 stops15h 19m

$1,037

BaltimoreLondon

BWI - LHR

BWILHR

Baltimore/Washington

Sun 6/7

11:54 am-6:25 am

1 stop13h 31m

London Heathrow

Wed 9/9

9:55 am-10:54 pm

2 stops17h 59m

$1,048
Quickest round-trip

BaltimoreLondon

BWI - LHR

BWILHR

Baltimore/Washington

Mon 6/1

9:30 pm-9:50 am

Nonstop7h 20m

London Heathrow

Tue 6/9

4:25 pm-7:40 pm

Nonstop8h 15m

$1,100

BaltimoreLondon

BWI - LHR

BWILHR

Baltimore/Washington

Mon 7/6

9:39 am-7:10 am

1 stop16h 31m

London Heathrow

Thu 7/9

10:45 am-11:35 pm

2 stops17h 50m

$1,119

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/5

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Baltimore to Heathrow

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Baltimore to Heathrow in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*2 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Baltimore-London Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Baltimore-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Baltimore-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Baltimore-London Heathrow Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Baltimore-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Baltimore to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Baltimore with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Baltimore to London Heathrow Airport

How far ahead should I book a flight from Baltimore to London Heathrow Airport?

Use this chart to determine the optimal time to book a round-trip flight from Baltimore to Heathrow. Price data was last updated on April 3, 2026.

The best time to book flights from Baltimore to London Heathrow Airport is 57 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Baltimore to London Heathrow Airport?

Currently, August is the cheapest month in which you can book a flight from Baltimore to London Heathrow Airport (average of $435). Flying from Baltimore to London Heathrow Airport in June is currently the most expensive (average of $756). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BWI to LHR?

Find hourly flight availability from Baltimore to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 9, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Baltimore to London Heathrow Airport as you normally would.

How much does it cost to fly round-trip from Baltimore to London Heathrow Airport?

The best insider tips for Baltimore to London Heathrow Airport flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Baltimore to London Heathrow Airport trip
Our travel experts
Emily Zemler

Emily Zemler

Expert on BWI

Emily is a freelance writer and book author based in London covering entertainment and travel. Her work has appeared in Los Angeles Times, Observer, and Conde Nast Traveler She has ventured to more than 40 countries and all seven continents, always in search of a great art museum. She has written extensively about hotels, luxury travel, and aviation.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on LHR

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated April 9, 2026.
Read reviews from past customers who have flown Finnair,American Airlines, andIcelandair from Baltimore to London Heathrow Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.7
Good
1,381 reviews

Boarding

7.7

Entertainment

6.9

Overall

7.7

Crew

8.2

Comfort

7.5

Food

6.7

Reviews

1 / 20
4.0
Okay

Anonymous,Sep 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
Finnair
7.7
Good
1,381 reviews
Finnair
7.7
Good
1,381 reviews

Boarding

7.7

Entertainment

6.9

Overall

7.7

Crew

8.2

Comfort

7.5

Food

6.7

Reviews

1 / 20
4.0
Okay

Anonymous,Sep 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
American Airlines
7.1
Good
11,563 reviews
Finnair
7.7
Good
1,381 reviews

Boarding

7.7

Entertainment

6.9

Overall

7.7

Crew

8.2

Comfort

7.5

Food

6.7

Reviews

1 / 20
4.0
Okay

Anonymous,Sep 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
Icelandair
7.0
Good
632 reviews
Finnair
7.7
Good
1,381 reviews

Boarding

7.7

Entertainment

6.9

Overall

7.7

Crew

8.2

Comfort

7.5

Food

6.7

Reviews

1 / 20
4.0
Okay

Anonymous,Sep 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
Iberia
7.0
Good
3,176 reviews
Finnair
7.7
Good
1,381 reviews

Boarding

7.7

Entertainment

6.9

Overall

7.7

Crew

8.2

Comfort

7.5

Food

6.7

Reviews

1 / 20
4.0
Okay

Anonymous,Sep 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
British Airways
6.7
Okay
7,869 reviews
Finnair
7.7
Good
1,381 reviews

Boarding

7.7

Entertainment

6.9

Overall

7.7

Crew

8.2

Comfort

7.5

Food

6.7

Reviews

1 / 20
4.0
Okay

Anonymous,Sep 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.

Related info for your journey

Find useful and relevant information for your journey from Baltimore to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Baltimore to London Heathrow?

    If you book a flight to London Heathrow from Baltimore, you will be flying from Baltimore/Washington, which is the city’s only airport. Baltimore/Washington (BWI) is located 8.5 mi from the center of Baltimore. There are 4 flights from Baltimore/Washington to London Heathrow per day from 8 different airlines.

  • How long is the flight from Baltimore to London Heathrow Airport?

    Departing from Baltimore to London Heathrow Airport will take you 10h 24m. The distance between Baltimore and London Heathrow Airport is about 3622 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Baltimore to London Heathrow Airport round-trip?

    Cheapflights users have booked flights from Baltimore to London Heathrow Airport round-trip from $462. Other airlines that can offer you cheap pricing are Virgin Atlantic, from $471, and Icelandair, from $481. Users have found that United Airlines is 40% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Baltimore to London Heathrow Airport one-way?

    The cheapest airlines for a one-way flight from Baltimore to London Heathrow Airport are Icelandair ($202), Iberia ($363), and British Airways ($374).

  • What are the most reliable airlines from Baltimore to London Heathrow Airport?

    No one likes to see their flight delayed. When booking a flight from Baltimore to London Heathrow Airport consider choosing American Airlines (76%), Aer Lingus (76%) or Finnair (76%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Baltimore to London Heathrow Airport?

    The cheapest flight price from Baltimore to London Heathrow Airport is $350. On average you can expect to pay $1,447. The most popular route, (Baltimore/Washington - London Heathrow), can usually be booked for $699.

  • Can I find deals for flights from Baltimore to Heathrow that include hotel bookings?

    Yes. In addition to deals on Baltimore to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Baltimore to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Baltimore to Heathrow.

  • Can I find deals for business class flights from Baltimore to Heathrow?

    Yes. Cheapflights offers flight deals from Baltimore to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Baltimore to London Heathrow Airport?

    Currently, August is the cheapest month in which you can book a flight from Baltimore to London Heathrow Airport (average of $435). Flying from Baltimore to London Heathrow Airport in June is currently the most expensive (average of $756). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Ilford
Hounslow
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Winchester
Orpington
Watford
Northampton
Borehamwood
Broadway
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Sutton

Browse thousands of different options on Cheapflights for your next trip

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Top 8 airlines flying from Baltimore to Heathrow

Discover the top 8 airlines that operate flights from Baltimore to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$462Average$886FlexibilityNo cancel feeOn-time69%
Virgin AtlanticCheapest$471Average$709FlexibilityNo cancel feeOn-time72%
IcelandairCheapest$481Average$635FlexibilityNo cancel feeOn-time76%
FinnairCheapest$591Average$767FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$596Average$818FlexibilityNo cancel feeOn-time70%
DeltaCheapest$598Average$867FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$603Average$812FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$604Average$851FlexibilityNo cancel feeOn-time71%

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