Find Cheap Flights from Washington to Lisbon Humberto Delgado (WAS - LIS)

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Wed 1/24
Wed 1/31
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Good to Know

Low Season:
February
Best time to beat the crowds
3%
expected price decrease
High Season:
July
Most popular time to fly
16%
expected price increase
Average Price:
$1125
(avg. price over the last 2 weeks)
Good Deal:
$800
or less (round trip)

When to Book Flights from Washington to Lisbon Humberto Delgado

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 $799 or less.
The cheapest flight from Washington to Lisbon Humberto Delgado was found 90 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 February.
Morning departure is around 21% 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 Washington to Lisbon Humberto Delgado Flights

How long does a flight from Washington to Lisbon Humberto Delgado take?
An average nonstop flight takes 9h 28m, covering a distance of 3563 miles.
Which airlines provide the cheapest flights from Washington to Lisbon Humberto Delgado?
In the past 3 days, the cheapest round-trip tickets were found on Multiple Airlines ($570), British Airways ($599) and Turkish Airlines ($702).
Do I need a passport to fly between Washington and Lisbon Humberto Delgado?
Yes.
What’s the cheapest day of the week to fly Washington to Lisbon Humberto Delgado?
For Washington to Lisbon Humberto Delgado, Saturday is the cheapest day to fly on average and Wednesday is the most expensive. Flying from Lisbon Humberto Delgado back to Washington, the best deals are generally found on Saturday, with Tuesday being the most expensive.

Book cheap flights from Washington to Lisbon Humberto Delgado (round-trip)

Airports
Origin
Washington
$570
only
$570
$708
only
$708
Destination
Lisbon
$570
only
$570
Sat, Mar 10
IAD
LIS
17h 50m
Wed, Mar 14
LIS
IAD
18h 25m
Trip: 4 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Apr 25
IAD
LIS
19h 50m
Tue, May 1
LIS
IAD
22h 05m
Trip: 7 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 14988 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
LHR
RUH
Mediocre 2.0

There was a problem in the pilot flying from London to Riyadh and did not go to us tomorrow, I do not know is the reason you (KAYAK) or they are this problem is very large and I am not satisfied with this service

LHR
YUL
Excellent 8.0

I was a good trip, except for one thing.

I was very upset when travelling from Mumbai to London, Heathrow, because the crew in Mumbai did not send my baggage directly to Toronto and I had to go through the whole process of checking in Montreal to travel to Toronto, which was my last destination.

IST
LHR
Excellent 8.3

All was easy

It wasn't super comfortable

LHR
IAD
Excellent 8.6

Friendly

Seating

LHR
CDG
Excellent 10.0

The plane was new. The crew was awesome and the flight short.

Fri, Jan 26
IAD
LIS
30h 30m
Fri, Feb 2
LIS
IAD
32h 10m
Trip: 8 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 17620 reviews
Overall
8.0
Boarding
7.9
Comfort
7.8
Crew
8.3
Entertainment
8.1
Food
7.9
JFK
IST
Excellent 9.0

1. I had one empty seat next to me. 2. Australian Open (tennis) was live on my tv screen!

Although the crew was quite nice, one crew member was kind so-so.

IST
LAX
Good 6.0

Seats are not comfortable you end up with bad neck pain

ORD
IST
Excellent 8.6

Comfortable but narrow seats.

Entertainment system could do with more selection.

IST
TUN
Good 7.3

The captain was a woman!!!! So good to see that! And the whole crew was female, they all did a fantastic job.

One of the most uncomfortable plane rides I've been in... seats were so tight, my neighbor was basically on the armrest and over it all the time, it was hot in the plane, I couldn't wait to get out of there.

ORD
IST
Excellent 8.0

Crew and the food

That the WiFi didn’t work.

Tue, May 1
DCA
LIS
29h 40m
Tue, May 8
LIS
DCA
20h 34m
Trip: 8 days
7.7GoodShow reviews
Overall 7.7 Good
Based on 2872 reviews
Overall
7.9
Boarding
8.0
Comfort
7.5
Crew
8.3
Entertainment
7.3
Food
7.2
JFK
HEL
Mediocre 3.0

The plane landed much later than expected, and I missed my connecting flight to Moscow. While I was given another boarding pass, I had to have another layover in St. Petersburg, and fly to Moscow from there. The flight turned out to be much longer, and much more exhausting. My overall experience was unpleasant.

HEL
LHR
Excellent 10.0

I think this airline has an attention to detail and level of service which surpasses most other airlines. Whilst remaining competitive these factors make traveling with Finnair a far more comfortable and attractive proposition for me. In addition, Helsinki airport must be one of the best around.

HEL
FCO
Excellent 10.0

Loved it

LED
HEL
Good 6.5

Nice crew that were helpful.

Small plane, cramped seating.

HEL
MIA
Okay 4.0

Missed my connecting flight from Helsinki to Miami because the flight from New Delhi, India was delayed by more than 4 hours.

Fri, Jun 1
IAD
LIS
12h 40m
Tue, Jun 5
LIS
IAD
31h 45m
Trip: 5 days
6.5GoodShow reviews
Overall 6.5 Good
Based on 1613 reviews
Overall
6.6
Boarding
6.5
Comfort
6.6
Crew
6.9
Entertainment
6.1
Food
6.3
JFK
CMN
Okay 4.0

It got me safely to Casablanca

Very small aircraft, no space and filled to capacity. Could not even get up to walk and stretch, essential for such a long flight. Very uncomfortable. My entertainment system did not work, staff tried rebooting, still didn't work. Their answer? Go to another seat, BUT the plane was full. NOT HELPFUL.

CMN
MAD
Mediocre 2.0

Breakfast was poor Service was poor

CMN
FNA
Okay 5.3

Plenty of room, plane was not full so we could stretch out and sleep

Food

CMN
YUL
Mediocre 2.0

Not happy

CMN
JFK
Mediocre 2.0

Nothing

Flight cancelled at last minute. No accommodations given. Very rude staff.

Wed, Feb 7
DCA
LIS
9h 28m
Wed, Feb 14
LIS
DCA
13h 33m
Trip: 8 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 3111 reviews
Overall
7.5
Boarding
7.5
Comfort
7.4
Crew
8.0
Entertainment
6.8
Food
7.1
GRU
LIS
Excellent 10.0

everything:personal, services

PRG
LIS
Excellent 10.0

Great friendly service. Very clean and organized crew. Nice plane, great flight crew. Comfortable seats. Free ear pieces and drinks for international flights.

EWR
LIS
Mediocre 2.0

Food was ok

The customer service I received was horrible horrible horrible especially from the check in counter the were very rude . After booking my flight on kayak I called TAP customer service just to make sure that everything was fine .I asked them about luggage they said I had 2 free and a carry on when I got to the airport said I had to pay for the 2 i said no told them that i called TAP they didn't wanna hear it i asked for the manager she I am the manager and you bought a discounted ticket and there's no luggage with this ticket only acarry on in a mean way if you want the you have to pay $90 for each I tried to call TAP can't get through them when they finally got through them the guy confirmed that I ve called it on the records but it said now it's too late to do anything I am already at the airport that I have to pay and contact them later. I wasted good hour and a half on this and I had to pay $180. After all that at the boarding gate they announced that they will call by zone .they called especial need called frequent flyers zone A never called zone B all they said last minute was this is the final call for flight #.... and I was right in front of them and guess who were the people making the announcement yep the same people at the check in counter

LIS
MAD
Excellent 8.3

everything is ok but food is bad. better give to passenger fruit or bisquit, wafers

LIS
MIA
Excellent 10.0

Great friendly service. Very clean and organized crew. Nice plane, great flight crew. Comfortable seats. Free ear pieces and drinks for international flights

Tue, Apr 10
IAD
LIS
23h 10m
Wed, Apr 18
LIS
IAD
22h 05m
Trip: 9 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 14988 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
TLV
LHR
Good 7.3

Good and crew were fine

Seats were too close, not comfortable

LHR
TLV
Excellent 8.6

Ground staff and crew excellent Boarding was confusing and not announced

The breakfast was kind of gnarly - the eggs were oversalted and slimy, like worse than the usual airplane meal

LCA
LHR
Okay 4.6

Crew were great.

Stop trying to be a budget airline and invest in your customers rather than shareholders. Need better seats, free meals on 4+ hour flights, and entertainment. Also, the plane was old and definitely needed interior work (call buttons and lights were constantly flashing and ringing for the last 30 minutes of the flight).

DUB
LAX
Okay 4.0

Flight left almost on time and arrived on time. Crew was friendly.

Wasn't able to select a seat ahead of time like with other airlines. Seat rows way too tight (even for a normal 130 lb person like me). No good movie options, very limited selection. Food pretty bad, but that's almost expected this day and age.

FRA
LHR
Mediocre 3.0

Being charged for everything! Even a coke....really! Couldn't reserve a seat until 24 hrs. without paying extra .

Wed, Jan 24
IAD
LIS
30h 30m
Wed, Jan 31
LIS
IAD
32h 10m
Trip: 8 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 17620 reviews
Overall
8.0
Boarding
7.9
Comfort
7.8
Crew
8.3
Entertainment
8.1
Food
7.9
IST
JFK
Good 6.6

There simply is not enough room for such a long flight. I havent Flown in a while and was surprised at how tight the seats were since i last flew - both flying from the US to Istanbul and vice versa. However, for the shorter two hour connecting flights, from Istanbul to Tel Aviv, the seats seemed to have more room. This does not make sense.

IST
TUN
Good 7.3

The captain was a woman!!!! So good to see that! And the whole crew was female, they all did a fantastic job.

One of the most uncomfortable plane rides I've been in... seats were so tight, my neighbor was basically on the armrest and over it all the time, it was hot in the plane, I couldn't wait to get out of there.

DXB
IST
Excellent 9.3

The flight was comfortable and the entertainment was good.

There are not diverse food choices

ORD
IST
Excellent 8.0

Crew and the food

That the WiFi didn’t work.

ATH
IST
Okay 5.6

Entertainment

Crew are rude. They look always hurry, don't care what passengers need. Food is terrible, there is a menu, but when we ask for food on menu, they said no more, only this one left, so i skipped meal.

Tue, Apr 10
DCA
LIS
12h 20m
Wed, Apr 18
LIS
DCA
14h 18m
Trip: 9 days
Overall 0.0 Poor
Based on 0 reviews
Mon, May 7
IAD
LIS
19h 50m
Tue, May 22
LIS
IAD
22h 05m
Trip: 16 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 14988 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
LHR
CDG
Excellent 10.0

The plane was new. The crew was awesome and the flight short.

IST
LHR
Excellent 8.3

All was easy

It wasn't super comfortable

LHR
IAD
Excellent 8.6

Friendly

Seating

LHR
TLV
Excellent 8.6

Ground staff and crew excellent Boarding was confusing and not announced

The breakfast was kind of gnarly - the eggs were oversalted and slimy, like worse than the usual airplane meal

TLV
LHR
Good 7.3

Good and crew were fine

Seats were too close, not comfortable

Mon, Feb 12
IAD
LIS
30h 30m
Tue, Feb 20
LIS
IAD
36h 50m
Trip: 9 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 17620 reviews
Overall
8.0
Boarding
7.9
Comfort
7.8
Crew
8.3
Entertainment
8.1
Food
7.9
IST
LAX
Good 6.0

Seats are not comfortable you end up with bad neck pain

BOM
IST
Mediocre 2.0

Worst customer service.

IST
TUN
Good 7.3

The captain was a woman!!!! So good to see that! And the whole crew was female, they all did a fantastic job.

One of the most uncomfortable plane rides I've been in... seats were so tight, my neighbor was basically on the armrest and over it all the time, it was hot in the plane, I couldn't wait to get out of there.

IST
JFK
Excellent 8.6

Excellent staff, everything very clean, smooth flight, good movies.

The seats in Economy are too close together. A few more inches would make things better. The food was okay, some parts good, others so-so

ORD
IST
Excellent 8.6

Comfortable but narrow seats.

Entertainment system could do with more selection.

Tue, Feb 13
DCA
LIS
14h 08m
Tue, Feb 20
LIS
DCA
14h 22m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Jun 13
IAD
LIS
32h 25m
Thu, Jun 28
LIS
IAD
32h 20m
Trip: 16 days
6.5GoodShow reviews
Overall 6.5 Good
Based on 1613 reviews
Overall
6.6
Boarding
6.5
Comfort
6.6
Crew
6.9
Entertainment
6.1
Food
6.3
CMN
JFK
Okay 4.0

The entertainment is decent on these flights, usually. The don't switch up the movies often, but there are always some recent releases.

This was a rough flight. First, Air Maroc at some point rescheduled the flight to some six or seven hours later than when I booked it, without bothering to even send any notice. Apparently according to their terms of service they can just change flight times as they like, and passengers are responsible for somehow figuring it out and dealing with the consequences. Oddly, the original flight time was still posted online even after I learned of the change, so the only indication of the change was the boarding time on my ticket. When I asked for the new itinerary, RAM employees seemed very confused about why I would want to know when I was arriving in New York (which ended up being 1 AM instead of 5 PM). To the airline's credit, they did offer accommodation in Casablanca, if you stood in an hour-long line. However, although I had been flying since 5 AM and not leaving Casa until 10 PM, I was not offered vouchers for breakfast or dinner, but only lunch (at 2 PM). Because I had to leave the airport in Casablanca, I had to go through security half a dozen times, including while boarding, with various harmless things confiscated. The flight was kept extremely dry, and the crew was stingy with water (although tea and coffee were abundant), only offering water twice during a nearly 8 hour flight despite my requests, and doling it out in small cups which they seemed annoyed to refill. The crew was not efficient or fast. The food on Air Maroc is often okay, but this time it was nearly inedible, especially with little to wash it down. It was not the worst flight I've been on, but it was pretty miserable.

CMN
JFK
Mediocre 2.0

Nothing

Flight cancelled at last minute. No accommodations given. Very rude staff.

CMN
IAD
Okay 4.0

The agent was very accommodating at check-in to my request for a window seat.

My video screen broke in mid flight. The beverage service did not have any white wine. Furthermore, we were not allowed to board with water that was purchased in the secure area of the airport. And, on the plane sufficient water was not distributed to passengers during flight. Overall, a very uncomfortable flight.

CMN
JFK
Good 7.0

There was a better variety of movies than the last time I was on Royal Air Maroc. Hot food option was good - chicken and rice.

The bread! you have wonderful croissants and other bread in Morocco, how can you serve such horrible bread? with bad quality slice of cheese. After several flights in one day, I had yogurt 3 times - good thing I like yogurt because it gets to be alot. Not much variety in food, I found the same offerings last year when I took this same route.

CMN
IAD
Good 7.3

This particular flight was fine. Royal Air gives a sense of being unreliable overall, though.

Wed, Feb 21
IAD
LIS
30h 30m
Mon, Feb 26
LIS
IAD
32h 10m
Trip: 6 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 17620 reviews
Overall
8.0
Boarding
7.9
Comfort
7.8
Crew
8.3
Entertainment
8.1
Food
7.9
JFK
IST
Excellent 9.0

1. I had one empty seat next to me. 2. Australian Open (tennis) was live on my tv screen!

Although the crew was quite nice, one crew member was kind so-so.

IAH
IST
Excellent 10.0

Service over all

ORD
IST
Excellent 8.0

Crew and the food

That the WiFi didn’t work.

ATH
IST
Okay 5.6

Entertainment

Crew are rude. They look always hurry, don't care what passengers need. Food is terrible, there is a menu, but when we ask for food on menu, they said no more, only this one left, so i skipped meal.

IST
JFK
Good 6.6

There simply is not enough room for such a long flight. I havent Flown in a while and was surprised at how tight the seats were since i last flew - both flying from the US to Istanbul and vice versa. However, for the shorter two hour connecting flights, from Istanbul to Tel Aviv, the seats seemed to have more room. This does not make sense.

Sat, May 5
IAD
LIS
18h 10m
Fri, May 11
LIS
IAD
22h 05m
Trip: 7 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 14988 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
LHR
RUH
Mediocre 2.0

There was a problem in the pilot flying from London to Riyadh and did not go to us tomorrow, I do not know is the reason you (KAYAK) or they are this problem is very large and I am not satisfied with this service

LHR
BWI
Excellent 8.0

It felt like there was more leg room than on the US airplanes.

I thought the food was just okay.

DUB
LAX
Okay 4.0

Flight left almost on time and arrived on time. Crew was friendly.

Wasn't able to select a seat ahead of time like with other airlines. Seat rows way too tight (even for a normal 130 lb person like me). No good movie options, very limited selection. Food pretty bad, but that's almost expected this day and age.

IST
LHR
Excellent 8.3

All was easy

It wasn't super comfortable

FRA
LHR
Mediocre 3.0

Being charged for everything! Even a coke....really! Couldn't reserve a seat until 24 hrs. without paying extra .

Sun, Jul 15
IAD
LIS
13h 15m
Fri, Jul 20
LIS
IAD
12h 35m
Trip: 6 days
6.5GoodShow reviews
Overall 6.5 Good
Based on 1613 reviews
Overall
6.6
Boarding
6.5
Comfort
6.6
Crew
6.9
Entertainment
6.1
Food
6.3
CMN
MAD
Mediocre 2.0

Breakfast was poor Service was poor

CMN
JFK
Mediocre 2.0

Nothing

Flight cancelled at last minute. No accommodations given. Very rude staff.

CMN
YUL
Mediocre 2.0

Not happy

CMN
IAD
Okay 4.0

The agent was very accommodating at check-in to my request for a window seat.

My video screen broke in mid flight. The beverage service did not have any white wine. Furthermore, we were not allowed to board with water that was purchased in the secure area of the airport. And, on the plane sufficient water was not distributed to passengers during flight. Overall, a very uncomfortable flight.

CMN
JFK
Good 7.0

There was a better variety of movies than the last time I was on Royal Air Maroc. Hot food option was good - chicken and rice.

The bread! you have wonderful croissants and other bread in Morocco, how can you serve such horrible bread? with bad quality slice of cheese. After several flights in one day, I had yogurt 3 times - good thing I like yogurt because it gets to be alot. Not much variety in food, I found the same offerings last year when I took this same route.

Tue, Mar 27
DCA
LIS
18h 49m
Wed, Apr 4
LIS
DCA
14h 18m
Trip: 9 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Mar 27
IAD
LIS
30h 30m
Wed, Apr 4
LIS
IAD
32h 40m
Trip: 9 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 17620 reviews
Overall
8.0
Boarding
7.9
Comfort
7.8
Crew
8.3
Entertainment
8.1
Food
7.9
ORD
IST
Excellent 8.0

Crew and the food

That the WiFi didn’t work.

IST
LAX
Good 6.0

Seats are not comfortable you end up with bad neck pain

IST
TUN
Good 7.3

The captain was a woman!!!! So good to see that! And the whole crew was female, they all did a fantastic job.

One of the most uncomfortable plane rides I've been in... seats were so tight, my neighbor was basically on the armrest and over it all the time, it was hot in the plane, I couldn't wait to get out of there.

IST
JFK
Excellent 8.6

Excellent staff, everything very clean, smooth flight, good movies.

The seats in Economy are too close together. A few more inches would make things better. The food was okay, some parts good, others so-so

IST
JFK
Good 6.6

There simply is not enough room for such a long flight. I havent Flown in a while and was surprised at how tight the seats were since i last flew - both flying from the US to Istanbul and vice versa. However, for the shorter two hour connecting flights, from Istanbul to Tel Aviv, the seats seemed to have more room. This does not make sense.

Tue, Apr 3
DCA
LIS
17h 40m
Sun, Apr 8
LIS
DCA
29h 32m
Trip: 6 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Jul 25
IAD
LIS
23h 25m
Wed, Aug 1
LIS
IAD
22h 05m
Trip: 8 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 14988 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
FRA
LHR
Mediocre 3.0

Being charged for everything! Even a coke....really! Couldn't reserve a seat until 24 hrs. without paying extra .

LHR
IAD
Excellent 8.6

Friendly

Seating

LHR
CDG
Excellent 10.0

The plane was new. The crew was awesome and the flight short.

LCA
LHR
Okay 4.6

Crew were great.

Stop trying to be a budget airline and invest in your customers rather than shareholders. Need better seats, free meals on 4+ hour flights, and entertainment. Also, the plane was old and definitely needed interior work (call buttons and lights were constantly flashing and ringing for the last 30 minutes of the flight).

TLV
LHR
Good 7.3

Good and crew were fine

Seats were too close, not comfortable

Show more results

Washington to Lisbon Humberto Delgado Flight Information

Flights Arrive in Lisbon Humberto Delgado
Flights Depart from Washington
Flight Price $570
Distance 3563 miles
Airlines British Airways, Turkish Airlines, Finnair, Royal Air Maroc, TAP AIR PORTUGAL
*
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.

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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.