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

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Sat 11/18
Sat 11/25
Any month
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Good to Know

Low Season:
January
Best time to beat the crowds
3%
expected price decrease
High Season:
July
Most popular time to fly
20%
expected price increase
Average Price:
$988
(avg. price over the last 2 weeks)
Good Deal:
$660
or less (round trip)

When to Book Flights from Baltimore/Washington to London

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

Top tips for Finding a Cheap Flight

When looking for a cheap flight, consider that 25% of our users selected a flight on this route for $660 or less.
The cheapest flight from Baltimore/Washington to London was found 69 days before departure, on average.
Book at least 2 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 January.
Morning departure is around 5% more expensive 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 Flights

How long does a flight from Baltimore/Washington to London take?
An average nonstop flight takes 10h 25m, covering a distance of 3638 miles.
How many flights are there between Baltimore/Washington and London?
There are 35 (nonstop) flights between Baltimore/Washington and London per week, averaging 5 per day.
Which airlines provide the cheapest flights from Baltimore/Washington to London?
In the past 3 days, the cheapest round-trip tickets were found on WOW air ($339) and Multiple Airlines ($358)
Do I need a passport to fly between Baltimore/Washington and London?
Yes.
Which airlines fly most frequently between Baltimore/Washington and London?
American Airlines (1 times daily), Aer Lingus (1 times daily), Finnair (1 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly Baltimore/Washington to London?
For Baltimore/Washington to London, Monday is the cheapest day to fly on average and Thursday is the most expensive. Flying from London back to Baltimore/Washington, the best deals are generally found on Tuesday, with Thursday being the most expensive.

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

Airports
Origin
Baltimore
$339
only
$339
Destination
London
$358
only
$358
$339
only
$339
Mon, Mar 5
BWI
LGW
10h 25m
Wed, Mar 14
LGW
BWI
11h 30m
Trip: 9 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1048 reviews
Overall
6.0
Boarding
6.4
Comfort
5.7
Crew
7.0
Entertainment
4.2
Food
4.7
KEF
ORD
Excellent 8.4

The connecting flight waited for us in Reykavik. The stewardess was helpful in helping my wife and I find a place to sit together. All else went smoothly.

YYZ
KEF
Good 6.5

Staff were very nice on the flight. Price of ticket was great if you're able to travel light & bring a small personal item only (otherwise you are charged for baggage).

Your flight is only economical if you don't need to bring a carry-on or check a bag. Also if you bring your own snacks/light meal as everything else is an added cost. Water isn't even provided. Seats are ok, could be a bit more comfortable.

YYZ
KEF
Mediocre 2.0

Nothing at all

Service there carryon system

KEF
BRU
Mediocre 3.6

Only the price

Had to run cause first flight very late Why does this airline calculate to not let people having a break, real food, shopping, smoking in Rekjavik. Late in Bru too + half a mile to walk No food available on board, only junk sad!

BOS
KEF
Okay 4.0

Crew was nuce

Cramped seating. No entertainment. Upcharges

Thu, May 3
BWI
LTN
13h 20m
Mon, May 7
LTN
BWI
16h 50m
Trip: 5 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Mar 7
BWI
LGW
10h 25m
Sun, Mar 11
LGW
BWI
26h 15m
Trip: 5 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1048 reviews
Overall
6.0
Boarding
6.4
Comfort
5.7
Crew
7.0
Entertainment
4.2
Food
4.7
YYZ
KEF
Good 6.5

Staff were very nice on the flight. Price of ticket was great if you're able to travel light & bring a small personal item only (otherwise you are charged for baggage).

Your flight is only economical if you don't need to bring a carry-on or check a bag. Also if you bring your own snacks/light meal as everything else is an added cost. Water isn't even provided. Seats are ok, could be a bit more comfortable.

BOS
KEF
Okay 4.0

Crew was nuce

Cramped seating. No entertainment. Upcharges

KEF
ORD
Excellent 8.4

The connecting flight waited for us in Reykavik. The stewardess was helpful in helping my wife and I find a place to sit together. All else went smoothly.

KEF
FRA
Mediocre 2.0

No much

Terrible service

ORD
KEF
Mediocre 2.8

Great little airport in Iceland , fast customs lane and between gates liked the smoking patio.at Reykjavik About WOW : only the price and nice lady at BRU check-in

BRU-CHI arrived very late, no time for anything at Reykjavik like eating/shoping. This won't make me spend more on the plane! Same problem return CHI-Reykjavik, had to run for making the connection Pilot talking every 10 mn + light on all the time .True on the 4 WOW flights Crew traying to sale junk all the time -BUT- No real food avalable on the 4 flights Iven not 1 cup of water without a credit card. Very stupid and not legal Why don't you make people pay to go restroom?

Mon, Feb 12
BWI
LTN
15h 30m
Thu, Mar 1
LTN
BWI
14h 20m
Trip: 18 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Apr 10
BWI
LGW
10h 35m
Mon, Apr 23
LGW
BWI
35h 15m
Trip: 14 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1048 reviews
Overall
6.0
Boarding
6.4
Comfort
5.7
Crew
7.0
Entertainment
4.2
Food
4.7
BOS
KEF
Okay 4.0

Crew was nuce

Cramped seating. No entertainment. Upcharges

KEF
ORD
Excellent 8.4

The connecting flight waited for us in Reykavik. The stewardess was helpful in helping my wife and I find a place to sit together. All else went smoothly.

YYZ
KEF
Mediocre 2.0

Nothing at all

Service there carryon system

YYZ
KEF
Okay 4.3

The cabin crew, their uniforms, the pink lights, the menu for souvenirs.

Lack of communication, fees are very expensive for luggage. I flew Toronto to Iceland and Iceland to London. In Toronto the crew arrived late and had people who checked in online come and show their iD documents. People were confused and lining up for regular boarding so half way through they just started boarding. It was ridiculous.

KEF
EWR
Okay 5.0

I already emailed WOW customer service and have yet to receive a response. Please respond to my email as it has been past your typical turnaround time

Wed, May 16
BWI
LTN
12h 50m
Wed, May 23
LTN
BWI
16h 35m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Apr 24
BWI
LGW
10h 35m
Sat, May 5
LGW
BWI
11h 10m
Trip: 12 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1048 reviews
Overall
6.0
Boarding
6.4
Comfort
5.7
Crew
7.0
Entertainment
4.2
Food
4.7
SXF
KEF
Good 6.0

The good InterCity Hotel to wait out our cancellation.

Any airline might need to cancel a flight, but WOW Air needs to work at its communication.Was it weather in Chicago (the forecast was fine), Reykavik (but another flight headed out the same time), or were we lied to? We learned our flight was cancelled at the gate. Other passengers received phone messages, we did not. There was nothing on the monitors in the airport to say the flight was cancelled. Cannot WOW and the airport ensure this is communicated in multiple ways? We were grateful WOW put us up in a nice hotel for two days, but did it have to be two days? We re-booked and got a confirming email, but with no evidence of our reservation on the app or the website, we headed to the airport not knowing whether we had a seat or not. Hope this helps to prevent customers turning away from WOW because the concept of WOW is a good one.

ORD
KEF
Mediocre 2.8

Great little airport in Iceland , fast customs lane and between gates liked the smoking patio.at Reykjavik About WOW : only the price and nice lady at BRU check-in

BRU-CHI arrived very late, no time for anything at Reykjavik like eating/shoping. This won't make me spend more on the plane! Same problem return CHI-Reykjavik, had to run for making the connection Pilot talking every 10 mn + light on all the time .True on the 4 WOW flights Crew traying to sale junk all the time -BUT- No real food avalable on the 4 flights Iven not 1 cup of water without a credit card. Very stupid and not legal Why don't you make people pay to go restroom?

KEF
EWR
Okay 5.0

I already emailed WOW customer service and have yet to receive a response. Please respond to my email as it has been past your typical turnaround time

YYZ
KEF
Mediocre 2.0

Nothing at all

Service there carryon system

YYZ
KEF
Okay 4.3

The cabin crew, their uniforms, the pink lights, the menu for souvenirs.

Lack of communication, fees are very expensive for luggage. I flew Toronto to Iceland and Iceland to London. In Toronto the crew arrived late and had people who checked in online come and show their iD documents. People were confused and lining up for regular boarding so half way through they just started boarding. It was ridiculous.

Sat, Apr 21
BWI
LTN
13h 05m
Mon, Apr 23
LTN
BWI
16h 50m
Trip: 3 days
Overall 0.0 Poor
Based on 0 reviews
Thu, May 3
BWI
LGW
10h 35m
Mon, May 14
LGW
BWI
11h 10m
Trip: 12 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1048 reviews
Overall
6.0
Boarding
6.4
Comfort
5.7
Crew
7.0
Entertainment
4.2
Food
4.7
YYZ
KEF
Good 6.5

Staff were very nice on the flight. Price of ticket was great if you're able to travel light & bring a small personal item only (otherwise you are charged for baggage).

Your flight is only economical if you don't need to bring a carry-on or check a bag. Also if you bring your own snacks/light meal as everything else is an added cost. Water isn't even provided. Seats are ok, could be a bit more comfortable.

BOS
KEF
Okay 4.0

Crew was nuce

Cramped seating. No entertainment. Upcharges

KEF
BRU
Mediocre 3.6

Only the price

Had to run cause first flight very late Why does this airline calculate to not let people having a break, real food, shopping, smoking in Rekjavik. Late in Bru too + half a mile to walk No food available on board, only junk sad!

YYZ
KEF
Okay 4.3

The cabin crew, their uniforms, the pink lights, the menu for souvenirs.

Lack of communication, fees are very expensive for luggage. I flew Toronto to Iceland and Iceland to London. In Toronto the crew arrived late and had people who checked in online come and show their iD documents. People were confused and lining up for regular boarding so half way through they just started boarding. It was ridiculous.

SXF
KEF
Good 6.0

The good InterCity Hotel to wait out our cancellation.

Any airline might need to cancel a flight, but WOW Air needs to work at its communication.Was it weather in Chicago (the forecast was fine), Reykavik (but another flight headed out the same time), or were we lied to? We learned our flight was cancelled at the gate. Other passengers received phone messages, we did not. There was nothing on the monitors in the airport to say the flight was cancelled. Cannot WOW and the airport ensure this is communicated in multiple ways? We were grateful WOW put us up in a nice hotel for two days, but did it have to be two days? We re-booked and got a confirming email, but with no evidence of our reservation on the app or the website, we headed to the airport not knowing whether we had a seat or not. Hope this helps to prevent customers turning away from WOW because the concept of WOW is a good one.

Wed, May 2
BWI
LTN
12h 50m
Sun, May 6
LTN
BWI
16h 35m
Trip: 5 days
Overall 0.0 Poor
Based on 0 reviews
Mon, May 7
BWI
LGW
10h 35m
Fri, May 18
LGW
BWI
11h 10m
Trip: 12 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1048 reviews
Overall
6.0
Boarding
6.4
Comfort
5.7
Crew
7.0
Entertainment
4.2
Food
4.7
YYZ
KEF
Good 6.5

Staff were very nice on the flight. Price of ticket was great if you're able to travel light & bring a small personal item only (otherwise you are charged for baggage).

Your flight is only economical if you don't need to bring a carry-on or check a bag. Also if you bring your own snacks/light meal as everything else is an added cost. Water isn't even provided. Seats are ok, could be a bit more comfortable.

BOS
KEF
Okay 4.0

Crew was nuce

Cramped seating. No entertainment. Upcharges

SXF
KEF
Good 6.0

The good InterCity Hotel to wait out our cancellation.

Any airline might need to cancel a flight, but WOW Air needs to work at its communication.Was it weather in Chicago (the forecast was fine), Reykavik (but another flight headed out the same time), or were we lied to? We learned our flight was cancelled at the gate. Other passengers received phone messages, we did not. There was nothing on the monitors in the airport to say the flight was cancelled. Cannot WOW and the airport ensure this is communicated in multiple ways? We were grateful WOW put us up in a nice hotel for two days, but did it have to be two days? We re-booked and got a confirming email, but with no evidence of our reservation on the app or the website, we headed to the airport not knowing whether we had a seat or not. Hope this helps to prevent customers turning away from WOW because the concept of WOW is a good one.

KEF
EWR
Okay 5.0

I already emailed WOW customer service and have yet to receive a response. Please respond to my email as it has been past your typical turnaround time

BOS
KEF
Okay 4.0

On flight back, how are you letting there be a 7 hours flight without any free food? For sure I understand I paid for an inexpensive flight, but offer a small biscuit and some water, or juice at the bare minimum.

Wed, May 16
BWI
LGW
10h 35m
Thu, May 24
LGW
BWI
11h 10m
Trip: 9 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1048 reviews
Overall
6.0
Boarding
6.4
Comfort
5.7
Crew
7.0
Entertainment
4.2
Food
4.7
KEF
EWR
Okay 5.0

I already emailed WOW customer service and have yet to receive a response. Please respond to my email as it has been past your typical turnaround time

KEF
ORD
Excellent 8.4

The connecting flight waited for us in Reykavik. The stewardess was helpful in helping my wife and I find a place to sit together. All else went smoothly.

KEF
LGW
Okay 4.3

The crew.

In Iceland, I didn’t think the boarding process could be any worse then the first leg of the flight, but it was. They were making announcements looking for 5 volunteers to stay overnight and catch the next flight out as this one was full. I believe I was the only volunteer and somehow i still ended up making the flight. This caused a lot of confusion with my friend picking me up in London. No passengers knew what was happening in Iceland as there was no communication from the airline and panic had started to spread. They didn’t even tell us we were to board a bus once through the gate, that took us to our plane. No one directed us once on the tarmac, so on the plane people from the front were coming from the back door.... chaos.

KEF
FRA
Mediocre 2.0

No much

Terrible service

YYZ
KEF
Okay 4.3

The cabin crew, their uniforms, the pink lights, the menu for souvenirs.

Lack of communication, fees are very expensive for luggage. I flew Toronto to Iceland and Iceland to London. In Toronto the crew arrived late and had people who checked in online come and show their iD documents. People were confused and lining up for regular boarding so half way through they just started boarding. It was ridiculous.

Sun, Apr 15
BWI
LTN
12h 50m
Tue, Apr 24
LTN
BWI
16h 50m
Trip: 10 days
Overall 0.0 Poor
Based on 0 reviews
Sun, Feb 25
BWI
LGW
10h 25m
Fri, Mar 2
LGW
BWI
11h 30m
Trip: 6 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1048 reviews
Overall
6.0
Boarding
6.4
Comfort
5.7
Crew
7.0
Entertainment
4.2
Food
4.7
KEF
FRA
Mediocre 2.0

No much

Terrible service

KEF
BRU
Mediocre 3.6

Only the price

Had to run cause first flight very late Why does this airline calculate to not let people having a break, real food, shopping, smoking in Rekjavik. Late in Bru too + half a mile to walk No food available on board, only junk sad!

KEF
EWR
Okay 5.0

I already emailed WOW customer service and have yet to receive a response. Please respond to my email as it has been past your typical turnaround time

KEF
LGW
Okay 4.3

The crew.

In Iceland, I didn’t think the boarding process could be any worse then the first leg of the flight, but it was. They were making announcements looking for 5 volunteers to stay overnight and catch the next flight out as this one was full. I believe I was the only volunteer and somehow i still ended up making the flight. This caused a lot of confusion with my friend picking me up in London. No passengers knew what was happening in Iceland as there was no communication from the airline and panic had started to spread. They didn’t even tell us we were to board a bus once through the gate, that took us to our plane. No one directed us once on the tarmac, so on the plane people from the front were coming from the back door.... chaos.

BOS
KEF
Okay 4.0

Crew was nuce

Cramped seating. No entertainment. Upcharges

Mon, Mar 5
BWI
LTN
21h 40m
Wed, Mar 14
LTN
BWI
14h 20m
Trip: 9 days
Overall 0.0 Poor
Based on 0 reviews
Sun, Apr 15
BWI
LGW
10h 35m
Sat, Apr 21
LGW
BWI
25h 50m
Trip: 7 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1048 reviews
Overall
6.0
Boarding
6.4
Comfort
5.7
Crew
7.0
Entertainment
4.2
Food
4.7
YYZ
KEF
Mediocre 2.0

Nothing at all

Service there carryon system

BOS
KEF
Okay 4.0

On flight back, how are you letting there be a 7 hours flight without any free food? For sure I understand I paid for an inexpensive flight, but offer a small biscuit and some water, or juice at the bare minimum.

SXF
KEF
Good 6.0

The good InterCity Hotel to wait out our cancellation.

Any airline might need to cancel a flight, but WOW Air needs to work at its communication.Was it weather in Chicago (the forecast was fine), Reykavik (but another flight headed out the same time), or were we lied to? We learned our flight was cancelled at the gate. Other passengers received phone messages, we did not. There was nothing on the monitors in the airport to say the flight was cancelled. Cannot WOW and the airport ensure this is communicated in multiple ways? We were grateful WOW put us up in a nice hotel for two days, but did it have to be two days? We re-booked and got a confirming email, but with no evidence of our reservation on the app or the website, we headed to the airport not knowing whether we had a seat or not. Hope this helps to prevent customers turning away from WOW because the concept of WOW is a good one.

KEF
LGW
Okay 4.3

The crew.

In Iceland, I didn’t think the boarding process could be any worse then the first leg of the flight, but it was. They were making announcements looking for 5 volunteers to stay overnight and catch the next flight out as this one was full. I believe I was the only volunteer and somehow i still ended up making the flight. This caused a lot of confusion with my friend picking me up in London. No passengers knew what was happening in Iceland as there was no communication from the airline and panic had started to spread. They didn’t even tell us we were to board a bus once through the gate, that took us to our plane. No one directed us once on the tarmac, so on the plane people from the front were coming from the back door.... chaos.

KEF
FRA
Mediocre 2.0

No much

Terrible service

Thu, Jan 25
BWI
LTN
15h 30m
Fri, Feb 2
LTN
BWI
14h 20m
Trip: 9 days
Overall 0.0 Poor
Based on 0 reviews
Sat, Feb 10
BWI
LGW
10h 25m
Wed, Feb 28
LGW
BWI
11h 30m
Trip: 19 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1048 reviews
Overall
6.0
Boarding
6.4
Comfort
5.7
Crew
7.0
Entertainment
4.2
Food
4.7
KEF
FRA
Mediocre 2.0

No much

Terrible service

BOS
KEF
Okay 4.0

On flight back, how are you letting there be a 7 hours flight without any free food? For sure I understand I paid for an inexpensive flight, but offer a small biscuit and some water, or juice at the bare minimum.

SXF
KEF
Good 6.0

The good InterCity Hotel to wait out our cancellation.

Any airline might need to cancel a flight, but WOW Air needs to work at its communication.Was it weather in Chicago (the forecast was fine), Reykavik (but another flight headed out the same time), or were we lied to? We learned our flight was cancelled at the gate. Other passengers received phone messages, we did not. There was nothing on the monitors in the airport to say the flight was cancelled. Cannot WOW and the airport ensure this is communicated in multiple ways? We were grateful WOW put us up in a nice hotel for two days, but did it have to be two days? We re-booked and got a confirming email, but with no evidence of our reservation on the app or the website, we headed to the airport not knowing whether we had a seat or not. Hope this helps to prevent customers turning away from WOW because the concept of WOW is a good one.

YYZ
KEF
Mediocre 2.0

Nothing at all

Service there carryon system

KEF
BRU
Mediocre 3.6

Only the price

Had to run cause first flight very late Why does this airline calculate to not let people having a break, real food, shopping, smoking in Rekjavik. Late in Bru too + half a mile to walk No food available on board, only junk sad!

Thu, Jan 18
BWI
LTN
15h 30m
Mon, Jan 22
LTN
BWI
32h 05m
Trip: 5 days
Overall 0.0 Poor
Based on 0 reviews
Mon, Dec 4
BWI
LGW
10h 25m
Thu, Dec 7
LGW
BWI
11h 30m
Trip: 4 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1048 reviews
Overall
6.0
Boarding
6.4
Comfort
5.7
Crew
7.0
Entertainment
4.2
Food
4.7
KEF
FRA
Mediocre 2.0

No much

Terrible service

BOS
KEF
Okay 4.0

On flight back, how are you letting there be a 7 hours flight without any free food? For sure I understand I paid for an inexpensive flight, but offer a small biscuit and some water, or juice at the bare minimum.

YYZ
KEF
Okay 4.3

The cabin crew, their uniforms, the pink lights, the menu for souvenirs.

Lack of communication, fees are very expensive for luggage. I flew Toronto to Iceland and Iceland to London. In Toronto the crew arrived late and had people who checked in online come and show their iD documents. People were confused and lining up for regular boarding so half way through they just started boarding. It was ridiculous.

KEF
EWR
Okay 5.0

I already emailed WOW customer service and have yet to receive a response. Please respond to my email as it has been past your typical turnaround time

KEF
BRU
Mediocre 3.6

Only the price

Had to run cause first flight very late Why does this airline calculate to not let people having a break, real food, shopping, smoking in Rekjavik. Late in Bru too + half a mile to walk No food available on board, only junk sad!

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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.