Find Cheap Flights from Baltimore/Washington to London Heathrow (BWI - LHR)

Search hundreds of travel sites at once for deals on flights to London Heathrow

Depart
Return
Any month
Compare vs. KAYAK |

Baltimore/Washington to London Heathrow Flight Information

Avg. Flight Duration 7h 36m
Flights Arrive in London Heathrow
Flights Depart from Baltimore/Washington
Flight Price $432
Distance 3,625 miles
Airlines British Airways, Air Canada, Delta, Iberia

Good to Know

Low Season:
October
Best time to beat the crowds
3%
expected price decrease
High Season:
July
Most popular time to fly
16%
expected price increase
Average Price:
$752
(avg. price over the last 2 weeks)
Good Deal:
$614
or less (round trip)

When to Book Flights from Baltimore/Washington to London Heathrow

Estimated round-trip price
Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top Tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $614 or less.
The cheapest flight from Baltimore/Washington to London Heathrow was found 84 days before departure, on average.
Book at least 4 weeks before departure in order to get a below-average price.
High season is considered to be June, July and August. The cheapest month to fly is October.
Morning departure is around 37% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking Baltimore/Washington to London Heathrow Flights

How long does a flight from Baltimore/Washington to London Heathrow take?
An average nonstop flight takes 6h 55m, covering a distance of 3625 miles.
How many flights are there between Baltimore/Washington and London Heathrow?
There are 84 (nonstop) flights between Baltimore/Washington and London Heathrow per week, averaging 10 per day.
Which airlines provide the cheapest flights from Baltimore/Washington to London Heathrow?
In the past 3 days, the cheapest round-trip tickets were found on Multiple Airlines ($432), British Airways ($497) and Air Canada ($504).
Do I need a passport to fly between Baltimore/Washington and London Heathrow?
Yes.
Which airlines fly most frequently between Baltimore/Washington and London Heathrow?
American Airlines (2 times daily), Aer Lingus (2 times daily), Finnair (2 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly Baltimore/Washington to London Heathrow?
For Baltimore/Washington to London Heathrow, Tuesday is the cheapest day to fly on average and Wednesday is the most expensive. Flying from London Heathrow back to Baltimore/Washington, the best deals are generally found on Friday, with Thursday being the most expensive.

Book cheap flights from Baltimore/Washington to London Heathrow (round-trip)

Airports
Origin
Washington
$432
only
$432
Destination
London
$432
only
$432
Tue, May 7
BWI
Baltimore/Washington
LHR
London Heathrow
16h 30m
Fri, May 10
LHR
London Heathrow
BWI
Baltimore/Washington
15h 20m
Trip: 4 days
Overall 0.0 Poor
Based on 0 reviews
Mon, Apr 8
BWI
Baltimore/Washington
LHR
London Heathrow
7h 10m
Thu, Apr 25
LHR
London Heathrow
BWI
Baltimore/Washington
8h 05m
Trip: 18 days
7.7GoodShow reviews
Overall 7.7 Good
Based on 96 reviews
Overall
7.4
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
6.9
Food
6.8
BWI
LHR
Mediocre 2.0

Cons: For the second London trip in a row, my return flight to BWI was cancelled. Not weather, not equipment, just cancelled.

BWI
LHR
Excellent 10.0

Pros: I like everything the service provided by the crew and the airplane

BWI
LHR
Excellent 8.0

Pros: It was efficient and on time

Cons: British air is not what ir used to be. It is no longer high caliber flying. The attendant were not impeccable a it once were. The plane was not grand as o expected. Just average like any other airline

BWI
LHR
Mediocre 3.6

Cons: Absolutely no leg room despite paying additional fee

BWI
LHR
Excellent 10.0

Pros: The crew was professional. Plenty of space to store my carry on bag overhead. I also like the safety video at the beginning, featuring actors and comedians.

Cons: I have no complaints about this flight.

Sat, Apr 13
BWI
Baltimore/Washington
LHR
London Heathrow
23h 05m
Mon, Apr 22
LHR
London Heathrow
BWI
Baltimore/Washington
29h 57m
Trip: 10 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 23,572 reviews
Overall
7.2
Boarding
7.4
Comfort
7.1
Crew
7.7
Entertainment
6.9
Food
6.5
GRU
YYZ
Excellent 9.3

Pros: Tre crew was fantastic

Cons: Food

YOW
YXU
Excellent 10.0

Pros: Great staff!

Cons: Nothing

YVR
YYZ
Good 6.0

Pros: Crew was friendly

Cons: Not as nice as the flight to and from Honolulu

YOW
YYZ
Excellent 10.0

Pros: Quick flight. Dlient Service in check-in was excellent, she went the extra mile to change my return flight to a more reasonable time.

YUL
YVR
Excellent 10.0

Pros: Great service, a lot of legroom

Cons: Not really happy about the food choices

Tue, Apr 9
BWI
Baltimore/Washington
LHR
London Heathrow
9h 10m
Thu, Apr 18
LHR
London Heathrow
BWI
Baltimore/Washington
12h 49m
Trip: 10 days
7.9GoodShow reviews
Overall 7.9 Good
Based on 23,034 reviews
Overall
8.1
Boarding
8.1
Comfort
7.8
Crew
8.5
Entertainment
7.7
Food
7.4
PHF
ATL
Excellent 10.0

Cons: Great early morning flight.

JFK
RDU
Okay 5.6

Pros: Boarding process was smooth.

Cons: In flight service was disappointing.

ATL
MSP
Excellent 10.0

Pros: My flight was missed due to immigration taking almost 3 hours to get through the line. Delta went out of their way to make sure that I was able to get to my destination on a later flight as comfortable as possible.

Cons: Maybe not traveling through Atlanta if there is immigration clearance involved. I was really slow.

YYZ
ATL
Mediocre 2.0

Pros: The crew

Cons: Timing

ATL
DCA
Excellent 8.0

Cons: Seats could’ve been assigned ahead of time

Sat, Jul 27
BWI
Baltimore/Washington
LHR
London Heathrow
28h 25m
Thu, Aug 22
LHR
London Heathrow
BWI
Baltimore/Washington
16h 30m
Trip: 27 days
9.0ExcellentShow reviews
Overall 9.0 Excellent
Based on 1 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.7
Entertainment
7.0
Food
6.6
MAD
MDE
Excellent 8.0

Pros: The food is very good in 1st class.

Cons: Even though 1 of the 3 stewards was really excellent at everything (foremost his impecable attitude towards passengers), nothing is really standing out anymore in IBERIA 1st class. It used to be extremely good, but now everything is banal. No attention to detail or pleasantness. The one thing that really concerns me is that Spanish stewards, more the women than the men, are becoming more rude than before. I understand that some passengers must be a hassle from time to time, but this is their one and only job, so a nice attitude is of the utmost importance.

MAD
PTY
Excellent 9.3

Pros: Food on board was really good in general and some of the crew members where so polite and helpful but the rest of them nop.

Cons: The way the crew was serving the meals and offering everything was disappointing, in few word no good. Coffee, coffees anyone? Coffee, coffee! Please! That’s not a way for serving

RAK
MAD
Mediocre 3.6

Pros: We got there.

Cons: Plane arrived late so boarded late. Crew was ridiculously slow with drink/snack cart. They served only 5 rows so we never got a drink.

PRG
MAD
Good 7.0

Pros: Staff was very friendly

Cons: We wanted to eat and there was no sandwiches left.

DUS
MAD
Good 6.4

Pros: It was IBERIA Flight:

Cons: It was IBERIA Flight:

Wed, May 8
BWI
Baltimore/Washington
LHR
London Heathrow
14h 45m
Tue, May 14
LHR
London Heathrow
BWI
Baltimore/Washington
15h 20m
Trip: 7 days
Overall 0.0 Poor
Based on 0 reviews
Sun, Mar 24
BWI
Baltimore/Washington
LHR
London Heathrow
6h 55m
Tue, Apr 2
LHR
London Heathrow
BWI
Baltimore/Washington
8h 05m
Trip: 10 days
7.7GoodShow reviews
Overall 7.7 Good
Based on 96 reviews
Overall
7.4
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
6.9
Food
6.8
BWI
LHR
Excellent 10.0

Pros: Good food. Beautiful plane. Great stuff. Free beverages of all kinds.

BWI
LHR
Excellent 10.0

Pros: I liked everything! Free drinks, movies on demand on the seat-back screen on the seat in front of you... comfortable seats. I would definitely fly BA again!! (The American Airlines return flight was a bit less desirable in all categories. Comparatively, BA was awesome!).

Cons: Not a thing!

BWI
LHR
Excellent 10.0

Pros: The new Dreamliner made for the smoothest, quietest flight I've ever taken.

BWI
LHR
Excellent 9.6

Pros: The crew was great and made the flight comfortable and easy! They brought drinks as needed, free of charge, movies and headphones were provided, and the flight arrived ahead of schedule in London! A wonderful experience! Would absolutely fly again and was so pleased to find the deal on kayak!!!!

BWI
LHR
Okay 5.3

Cons: Dear Sir or Madam: My two colleagues and I bought our tickets from BWI to Geneva, via London Heathrow, through Kayak as I have many times in the past. However, the Kiwi.com travel agency did not flag that the ticket from BWI to London Heathrow allowed for one piece of checked luggage, but the ticket from London Heathrow onwards to Geneva did not allow for any checked luggage. Also astonishingly, we had to pass through Customs, reclaim our checked suitcases from the baggage carousel, and check in again through Customs to board the onward flight, both coming and going through London Heathrow. In addition to the extraordinary inconvenience that we could neither transit at London Heathrow to our connecting flight without going through Customs twice and that we could not check our luggage through to our final destination, we also had to foot a higher baggage charge to allow for checking in our suitcases, now that we had arrived in London Heathrow only to discover this that our onward ticket did not cover one piece of checked luggage. Had we known that the seemingly better price posted by Kiwi.com on Kayak’s comparative offerings came at such a high price of inconvenience and additional expense for the luggage, we would have taken our business elsewhere. It was deceptive of Kiwi.com to engage in such practices, even if it disclosed these conditions in fine print (for no one would expect, nor have I ever seen previously in the hundreds of flights I have taken as a Million Miler on United), without flagging this. And similarly, it was irresponsible of Kayak.com to allow this “apples with oranges” comparison on its website. I’m making three more international trips in December, but I’m inclined not to use either Kayak.com and most certainly not Kiwi.com for future airline ticket purchases.

Sun, May 12
BWI
Baltimore/Washington
LHR
London Heathrow
30h 30m
Mon, May 20
LHR
London Heathrow
BWI
Baltimore/Washington
29h 22m
Trip: 9 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 23,572 reviews
Overall
7.2
Boarding
7.4
Comfort
7.1
Crew
7.7
Entertainment
6.9
Food
6.5
CMN
YUL
Okay 5.0

Pros: No food , no entertainment options .

Cons: Have the option to purchase food on a 5 hour flight .

YUL
EWR
Good 7.2

Pros: The boarding was good and effective, Entertainment was good.

Cons: The crew did not pay attention to my requests for beverages and forgot to bring me what I have asked.

YOW
YYZ
Excellent 10.0

Pros: Quick flight. Dlient Service in check-in was excellent, she went the extra mile to change my return flight to a more reasonable time.

YYZ
MIA
Okay 5.6

Pros: Boarding and experience at terminal was good and smooth for the poor weather outside

Cons: Plane cleaning and confort, old plane and somewhat mean crew director.

YVR
SFO
Okay 5.6

Pros: We finally got to our destination

Cons: Weather delayed the flight by around 4 hours. Crew at the airport were clearly stressed and took it out on stressed passengers. You had to ask for everything rather than the crew proactively doing things to make people comfortable (regular updates, food vouchers, going around making sure people are comfortable). Captain on plane was good. Crew on plane was ok, more socializaing with each other rather than being proactively helpful.

Thu, Mar 21
BWI
Baltimore/Washington
LHR
London Heathrow
23h 15m
Tue, Apr 2
LHR
London Heathrow
BWI
Baltimore/Washington
31h 50m
Trip: 13 days
Overall 0.0 Poor
Based on 0 reviews
Sun, Aug 11
BWI
Baltimore/Washington
LHR
London Heathrow
7h 10m
Thu, Aug 29
LHR
London Heathrow
BWI
Baltimore/Washington
8h 05m
Trip: 19 days
7.7GoodShow reviews
Overall 7.7 Good
Based on 96 reviews
Overall
7.4
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
6.9
Food
6.8
BWI
LHR
Good 6.0

Pros: Safe flight

Cons: Just wanted a glass of coca cola.

BWI
LHR
Okay 5.3

Cons: Dear Sir or Madam: My two colleagues and I bought our tickets from BWI to Geneva, via London Heathrow, through Kayak as I have many times in the past. However, the Kiwi.com travel agency did not flag that the ticket from BWI to London Heathrow allowed for one piece of checked luggage, but the ticket from London Heathrow onwards to Geneva did not allow for any checked luggage. Also astonishingly, we had to pass through Customs, reclaim our checked suitcases from the baggage carousel, and check in again through Customs to board the onward flight, both coming and going through London Heathrow. In addition to the extraordinary inconvenience that we could neither transit at London Heathrow to our connecting flight without going through Customs twice and that we could not check our luggage through to our final destination, we also had to foot a higher baggage charge to allow for checking in our suitcases, now that we had arrived in London Heathrow only to discover this that our onward ticket did not cover one piece of checked luggage. Had we known that the seemingly better price posted by Kiwi.com on Kayak’s comparative offerings came at such a high price of inconvenience and additional expense for the luggage, we would have taken our business elsewhere. It was deceptive of Kiwi.com to engage in such practices, even if it disclosed these conditions in fine print (for no one would expect, nor have I ever seen previously in the hundreds of flights I have taken as a Million Miler on United), without flagging this. And similarly, it was irresponsible of Kayak.com to allow this “apples with oranges” comparison on its website. I’m making three more international trips in December, but I’m inclined not to use either Kayak.com and most certainly not Kiwi.com for future airline ticket purchases.

BWI
LHR
Good 7.0

Cons: Cramped seating with no leg room and dinner was barely edible.

BWI
LHR
Excellent 10.0

Pros: Very courteous staff. Food was good. Flight was fast. No problems.

BWI
LHR
Excellent 8.0

Pros: On time, friendly staff

Cons: It got incredibly cold for many hours

Mon, Mar 18
BWI
Baltimore/Washington
LHR
London Heathrow
17h 45m
Fri, Mar 29
LHR
London Heathrow
BWI
Baltimore/Washington
13h 40m
Trip: 12 days
Overall 0.0 Poor
Based on 0 reviews
Mon, Aug 26
BWI
Baltimore/Washington
LHR
London Heathrow
7h 10m
Tue, Sep 3
LHR
London Heathrow
BWI
Baltimore/Washington
8h 05m
Trip: 9 days
7.7GoodShow reviews
Overall 7.7 Good
Based on 96 reviews
Overall
7.4
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
6.9
Food
6.8
BWI
LHR
Excellent 10.0

Pros: I liked everything! Free drinks, movies on demand on the seat-back screen on the seat in front of you... comfortable seats. I would definitely fly BA again!! (The American Airlines return flight was a bit less desirable in all categories. Comparatively, BA was awesome!).

Cons: Not a thing!

ATH
LHR
Excellent 10.0

Pros: This was a long flight for us but the entertainment and food options were great and kept us comfortable the whole time.

Cons: Nothing really. It was a great flight.

BWI
LHR
Mediocre 3.6

Cons: Absolutely no leg room despite paying additional fee

BWI
LHR
Okay 4.6

Pros: Staff were friendly.

Cons: Check-in did not include my TSA-Pre or airline frequent flyer membership. Food was stale and inedible.

BWI
LHR
Good 7.6

Cons: Seat space too cramped

Thu, Mar 7
BWI
Baltimore/Washington
LHR
London Heathrow
10h 06m
Sat, Mar 16
LHR
London Heathrow
BWI
Baltimore/Washington
12h 17m
Trip: 9 days
7.9GoodShow reviews
Overall 7.9 Good
Based on 23,034 reviews
Overall
8.1
Boarding
8.1
Comfort
7.8
Crew
8.5
Entertainment
7.7
Food
7.4
RIC
ATL
Excellent 9.0

Pros: I loved Craig on our flight he made it a hilarious and fun experience! And he needs a raise!

Cons: The seat was a bit uncomfortable, and boarding was slow. To be expected I assume for anything not first class.

AMS
NBO
Okay 4.3

Pros: Crew was very pleasant

Cons: Old airplane. Everything was worn out and stained. Entertainment system is ancient. Economy seats are so small you can barely get in and out.

ORD
ATL
Okay 4.0

Cons: My flight from Chicago was two hours late and that's why I missed the flight from Atlanta to Buenos Aires. No one helped and did not know that the flight was delayed and I had to find a place to sleep. I'm not satisfied with the experience and I have not yet arrived in Argentina because of the whole

MSP
IAH
Okay 5.3

Cons: Old plane, long delay, sketchy WiFi.

IAD
AMS
Excellent 9.0

Pros: Super comfortable seats. Lots of movie options.

Cons: Food was not very good

Thu, Feb 28
BWI
Baltimore/Washington
LHR
London Heathrow
17h 25m
Thu, Mar 7
LHR
London Heathrow
BWI
Baltimore/Washington
12h 18m
Trip: 8 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 23,572 reviews
Overall
7.2
Boarding
7.4
Comfort
7.1
Crew
7.7
Entertainment
6.9
Food
6.5
CMN
YUL
Okay 5.0

Pros: No food , no entertainment options .

Cons: Have the option to purchase food on a 5 hour flight .

PVG
YUL
Excellent 8.0

Pros: Good service good flight fair food and nice seat.

Cons: Biggest issue the start very lax re security, 2 people never wore their seatbelts at any time, take off and landing. They hardly checked anything.

YUL
LAS
Mediocre 2.0

Pros: Did not board because you screwed up my reservation

Cons: Not screwing up my reservation!

EWR
YUL
Good 6.8

Pros: Staff polite and provided fast service.

Cons: Boarding was hazy and let room for loosing the plane.

YUL
YVR
Excellent 10.0

Pros: Great service, a lot of legroom

Cons: Not really happy about the food choices

Wed, Apr 10
BWI
Baltimore/Washington
LHR
London Heathrow
7h 10m
Thu, Apr 25
LHR
London Heathrow
BWI
Baltimore/Washington
8h 05m
Trip: 16 days
9.0ExcellentShow reviews
Overall 9.0 Excellent
Based on 1 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.7
Entertainment
7.0
Food
6.6
JFK
MAD
Okay 4.0

Pros: The time arrived at the airport was great

Cons: Not enough leg room, had to wait too long for shuttle bus to the terminal.

FCO
MAD
Excellent 8.0

Pros: On time and pleasant service .

Cons: The problem was outbound from Porto to Rome. Iberia lost 2 out of 3 bags and one took 24 hours to reach our Rome hotel and one took 48 hours to reach our Rome hotel.

TXL
MAD
Excellent 10.0

Pros: The people

Cons: Trafic

BOS
BCN
Mediocre 2.0

Pros: It was a direct flight

Cons: Ticket had no info on baggage allowance. Got charged $55 for one piece. Website has glitches that would not save passport info. Flight attendant did nothing. Did not ask people to have their seats upright during landing. No food or even water for a 7 hour flight unless you pay. Seat uncomfortable. Horrible experience.

MAD
TLV
Excellent 8.6

Pros: Loved the staff. As far as my experience flying Iberia for the first time is concerned, the the staff was very attentive and courteous. The food was not bad either as it was pretty good and included many beverage options. Would like to see how they do for flights lasting longer than 8 hours. Mine was only about 5 and a half hours from Madrid to Tel Aviv.

Mon, Feb 25
BWI
Baltimore/Washington
LHR
London Heathrow
11h 45m
Wed, Mar 6
LHR
London Heathrow
BWI
Baltimore/Washington
14h 15m
Trip: 10 days
Overall 0.0 Poor
Based on 0 reviews
Fri, May 24
BWI
Baltimore/Washington
LHR
London Heathrow
16h 05m
Fri, May 31
LHR
London Heathrow
BWI
Baltimore/Washington
21h 47m
Trip: 8 days
7.7GoodShow reviews
Overall 7.7 Good
Based on 96 reviews
Overall
7.4
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
6.9
Food
6.8
BWI
LHR
Excellent 10.0

Pros: British airways and the customer service

Cons: The fact that I was use inbooked a premium economy ticket on Kayak and when I got there it was an economy ticket.

BWI
LHR
Excellent 8.3

Pros: Crew was friendly and helpful.

BWI
LHR
Excellent 10.0

Pros: BA was professional in service!

Cons: Unable to make a connection so BA us sent to Gatwick to fly out the same day. Stressful but cared for.

AMS
LHR
Excellent 10.0

Pros: Good service, entertainment screen were good. Food was good.

Cons: None

BWI
LHR
Good 6.0

Pros: Sitting in exist row with leg room

Cons: Seats are small, not enough elbow space. Movie selection was bad.

Thu, Jun 6
BWI
Baltimore/Washington
LHR
London Heathrow
14h 45m
Sat, Jun 15
LHR
London Heathrow
BWI
Baltimore/Washington
15h 50m
Trip: 10 days
Overall 0.0 Poor
Based on 0 reviews
Sun, Jul 28
BWI
Baltimore/Washington
LHR
London Heathrow
7h 10m
Thu, Aug 22
LHR
London Heathrow
BWI
Baltimore/Washington
8h 05m
Trip: 26 days
7.7GoodShow reviews
Overall 7.7 Good
Based on 96 reviews
Overall
7.4
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
6.9
Food
6.8
BWI
LHR
Okay 4.0

Pros: Price was reasonable

Cons: Seats not good for 5'10" and taller. Leg room cut short by box fixed under seat in front of me

BWI
LHR
Excellent 10.0

Pros: I like everything the service provided by the crew and the airplane

BWI
LHR
Mediocre 3.3

Cons: air stewardess was very rude unecessarily

MAD
LHR
Excellent 8.0

Cons: Every think was ok

LHR
BOS
Excellent 10.0

Cons: It was a delta flight

Thu, Jun 6
BWI
Baltimore/Washington
LHR
London Heathrow
14h 45m
Sat, Jun 15
LHR
London Heathrow
BWI
Baltimore/Washington
15h 50m
Trip: 10 days
Overall 0.0 Poor
Based on 0 reviews
Show more results
*
Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

We compile tonnes of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
please send us an and someone from our team will get back to you promptly.

^
The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.