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Cheap flights from Houston George Bush Intcntl Airport to Lisbon from $309

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Houston George Bush Intcntl Airport to Lisbon departing on 4/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Houston George Bush Intcntl Airport to Lisbon

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:05 pm - 11:05 pm
IAH
-
LIS
20h 00m
1 stop
Multiple Airlines Logo
12:30 pm - 11:59 pm
LIS
-
IAH
17h 29m
2 stops
$553Multiple Airlines
Thu, Apr 30 - Mon, May 4
Multiple Airlines Logo
3:30 pm - 5:45 pm
IAH
-
LIS
20h 15m
1 stop
Multiple Airlines Logo
12:30 pm - 11:59 pm
LIS
-
IAH
17h 29m
2 stops
$554Multiple Airlines
Sun, Apr 12 - Mon, Apr 27
Multiple Airlines Logo
3:50 pm - 5:50 pm
IAH
-
LIS
20h 00m
1 stop
Multiple Airlines Logo
9:20 am - 1:15 pm
LIS
-
IAH
33h 55m
1 stop
$555Multiple Airlines
Tue, Apr 7 - Tue, Apr 14
Delta Logo
3:50 pm - 5:50 pm
IAH
-
LIS
20h 00m
1 stop
Delta Logo
5:00 am - 1:15 pm
LIS
-
IAH
14h 15m
1 stop
$556Delta
Tue, Apr 7 - Wed, Apr 15
Multiple Airlines Logo
3:50 pm - 10:25 pm
IAH
-
LIS
24h 35m
1 stop
Multiple Airlines Logo
5:00 am - 1:15 pm
LIS
-
IAH
14h 15m
1 stop
$558Multiple Airlines
Fri, Apr 17 - Fri, Apr 24
Delta Logo
3:20 pm - 6:45 pm
IAH
-
LIS
21h 25m
1 stop
Delta Logo
5:00 am - 1:15 pm
LIS
-
IAH
14h 15m
1 stop
$561Delta
Thu, Apr 9 - Thu, Apr 16
American Airlines Logo
9:05 pm - 11:15 pm
IAH
-
LIS
20h 10m
1 stop
American Airlines Logo
6:35 am - 5:21 pm
LIS
-
IAH
16h 46m
2 stops
$562American Airlines
Wed, Apr 22 - Wed, May 6
Delta Logo
3:50 pm - 2:55 pm
IAH
-
LIS
17h 05m
1 stop
Delta Logo
5:35 am - 1:35 pm
LIS
-
IAH
14h 00m
1 stop
$563Delta
Mon, Apr 13 - Mon, Apr 27
Delta Logo
3:50 pm - 5:50 pm
IAH
-
LIS
20h 00m
1 stop
Delta Logo
5:00 am - 5:42 pm
LIS
-
IAH
18h 42m
2 stops
$566Delta
Thu, Apr 9 - Wed, Apr 22
Iberia Logo
6:09 pm - 11:25 pm
IAH
-
LIS
23h 16m
2 stops
Iberia Logo
8:25 am - 11:48 pm
LIS
-
IAH
21h 23m
2 stops
$567Iberia
Tue, Apr 7 - Tue, Apr 14

Delta flights from Houston George Bush Intcntl Airport to Lisbon

Our best Delta deals on Houston George Bush Intcntl Airport to Lisbon flight tickets
Delta
Apr 7
IAH3:50 pmHouston George Bush Intcntl
20h 00m
1 stop
LIS5:50 pmLisbon Humberto Delgado
Apr 15
LIS5:00 amLisbon Humberto Delgado
14h 15m
1 stop
IAH1:15 pmHouston George Bush Intcntl
$556
Delta
Apr 9
IAH3:20 pmHouston George Bush Intcntl
21h 25m
1 stop
LIS6:45 pmLisbon Humberto Delgado
Apr 16
LIS5:00 amLisbon Humberto Delgado
14h 15m
1 stop
IAH1:15 pmHouston George Bush Intcntl
$561
Delta
Apr 13
IAH3:50 pmHouston George Bush Intcntl
17h 05m
1 stop
LIS2:55 pmLisbon Humberto Delgado
Apr 27
LIS5:35 amLisbon Humberto Delgado
14h 00m
1 stop
IAH1:35 pmHouston George Bush Intcntl
$563

Iberia flights from Houston George Bush Intcntl Airport to Lisbon

Our best Iberia deals on Houston George Bush Intcntl Airport to Lisbon flight tickets
Iberia
Apr 7
IAH6:09 pmHouston George Bush Intcntl
23h 16m
2 stops
LIS11:25 pmLisbon Humberto Delgado
Apr 14
LIS8:25 amLisbon Humberto Delgado
21h 23m
2 stops
IAH11:48 pmHouston George Bush Intcntl
$567
Iberia
Apr 14
IAH9:50 amHouston George Bush Intcntl
26h 35m
2 stops
LIS6:25 pmLisbon Humberto Delgado
Apr 22
LIS6:35 amLisbon Humberto Delgado
23h 14m
2 stops
IAH11:49 pmHouston George Bush Intcntl
$578
Iberia
Apr 22
IAH7:17 amHouston George Bush Intcntl
34h 08m
2 stops
LIS11:25 pmLisbon Humberto Delgado
May 2
LIS6:35 amLisbon Humberto Delgado
23h 24m
2 stops
IAH11:59 pmHouston George Bush Intcntl
$586

momondo Fare Finder

 
Customize your flight search to find flights from Houston George Bush Intcntl Airport to Lisbon 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, momondo users made 832,500 searches. Data last updated March 3, 2026.
Use the filters below to find and compare flights from Houston George Bush Intcntl Airport to Lisbon that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Thu 4/30

9:05 pm-11:05 pm

1 stop20h 00m

Lisbon Humberto Delgado

Mon 5/4

12:30 pm-11:59 pm

2 stops17h 29m

$553

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Sun 4/12

3:30 pm-5:45 pm

1 stop20h 15m

Lisbon Humberto Delgado

Mon 4/27

12:30 pm-11:59 pm

2 stops17h 29m

$554

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Tue 4/7

3:50 pm-5:50 pm

1 stop20h 00m

Lisbon Humberto Delgado

Tue 4/14

9:20 am-1:15 pm

1 stop33h 55m

$555

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Tue 4/7

3:50 pm-5:50 pm

1 stop20h 00m

Lisbon Humberto Delgado

Wed 4/15

5:00 am-1:15 pm

1 stop14h 15m

$556

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Fri 4/17

3:50 pm-10:25 pm

1 stop24h 35m

Lisbon Humberto Delgado

Fri 4/24

5:00 am-1:15 pm

1 stop14h 15m

$558

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Thu 4/9

3:20 pm-6:45 pm

1 stop21h 25m

Lisbon Humberto Delgado

Thu 4/16

5:00 am-1:15 pm

1 stop14h 15m

$561

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Wed 4/22

9:05 pm-11:15 pm

1 stop20h 10m

Lisbon Humberto Delgado

Wed 5/6

6:35 am-5:21 pm

2 stops16h 46m

$562

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Mon 4/13

3:50 pm-2:55 pm

1 stop17h 05m

Lisbon Humberto Delgado

Mon 4/27

5:35 am-1:35 pm

1 stop14h 00m

$563

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Thu 4/9

3:50 pm-5:50 pm

1 stop20h 00m

Lisbon Humberto Delgado

Wed 4/22

5:00 am-5:42 pm

2 stops18h 42m

$566

HoustonLisbon

IAH - LIS

IAHLIS

Houston George Bush Intcntl

Tue 4/7

6:09 pm-11:25 pm

2 stops23h 16m

Lisbon Humberto Delgado

Tue 4/14

8:25 am-11:48 pm

2 stops21h 23m

$567

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Lisbon from

How to get the cheapest flight ticket from Houston George Bush Intcntl Airport to Lisbon

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Lisbon?

In general, November is the cheapest month to fly from Houston George Bush Intcntl Airport to Lisbon. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $631. If you are unable to visit Lisbon during the month of November, then departing from Houston George Bush Intcntl Airport during the month January is also very affordable. Most momondo users find prices during this month for around $705.

How far in advance should I book a flight to Lisbon?

You are more likely to see cheaper flights to Lisbon from Houston George Bush Intcntl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Lisbon for around $854 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Lisbon from Houston George Bush Intcntl Airport for as low as $718 on momondo.

How have Houston George Bush Intcntl Airport to Lisbon flight prices changed over time?

As of March 2026, prices for Houston George Bush Intcntl Airport to Lisbon flights are approximately 4% cheaper when compared to flights at the same time last year.

When to book flights from Houston George Bush Intcntl Airport to Lisbon

Are you open to changing your travel dates? Check out the ideal times to fly from Houston George Bush Intcntl Airport to Lisbon according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Houston George Bush Intcntl Airport to Lisbon (IAH to LIS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Houston George Bush Intcntl Airport to Lisbon

Fastest flight time

12h 25m

Direct flights

None
The fastest flight from Houston George Bush Intcntl Airport to Lisbon takes 12h 25m
There are no direct flights from Houston George Bush Intcntl Airport to Lisbon. There are no popular flight routes from Houston George Bush Intcntl Airport to Lisbon.
Search flight deals

  • How far is Houston George Bush Intcntl to Lisbon Humberto Delgado by plane?

    The distance between Houston George Bush Intcntl and Lisbon Humberto Delgado is about 4768.5 mi. Typically, this will take 12h 25m by plane in normal conditions.

  • When did momondo last update prices for flights from Houston George Bush Intcntl Airport to Lisbon Humberto Delgado Airport?

    Prices for flights from Houston George Bush Intcntl Airport to Lisbon Humberto Delgado Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Houston George Bush Intcntl Airport to Lisbon Humberto Delgado Airport?

  • How old do you have to be to fly from Houston George Bush Intcntl Airport to Lisbon Humberto Delgado Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Houston George Bush Intcntl Airport to Lisbon Humberto Delgado Airport.

  • What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?

    The travel and health documents you'll need for your trip to Lisbon Humberto Delgado Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lisbon Humberto Delgado Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Houston George Bush Intcntl Airport to Lisbon?

Best airlines flying from Houston George Bush Intcntl Airport to Lisbon

Compare and see reviews for airlines that fly from Houston George Bush Intcntl Airport to Lisbon with momondo
Airline
Rating
Free Cancellation
Price
Air FrancePriceFrom $540Free CancellationRating
7.4
1,542 reviews
Search Air France flights
British AirwaysPriceFrom $559Free CancellationRating
6.7
7,774 reviews
Search British Airways flights
United AirlinesPriceFrom $583Free CancellationRating
7.4
9,382 reviews
Search United Airlines flights
KLMPriceFrom $595Free CancellationRating
7.8
1,463 reviews
Search KLM flights
DeltaPriceFrom $612Free CancellationRating
7.9
8,245 reviews
Search Delta flights
Turkish AirlinesPriceFrom $621Free CancellationRating
7.3
4,240 reviews
Search Turkish Airlines flights
Air CanadaPriceFrom $695Free CancellationRating
7.1
10,775 reviews
Search Air Canada flights

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Why use momondo?

Why should I use momondo to find a flight deal from Houston to Lisbon?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Houston to Lisbon. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Houston to Lisbon with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Houston to Lisbon flights to just show those with flexible booking policies.

How can momondo help me find flights from Houston to Lisbon?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Lisbon from Houston.

I’m not ready to book a flight from Houston to Lisbon right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Houston to Lisbon flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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