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$338+ Cheap flights from Missouri to Portugal

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 11/10. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LIS
oct. 16 — oct. 231
jeu. 10/16
jeu. 10/23
1 adult, Economy
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Cheap flight deals from Missouri to Portugal

Keep the following information in mind while searching for Missouri to Portugal flight deals. Data was last updated septembre 16, 2025.

Round-trip from

$505
(FlightHub)

One-way from

$338
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,143
From Missouri to Portugal
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One-way flight from Missouri to Portugal
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Highest demand for flights based on searches. 24% potential increase in price ($329 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($35 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Missouri to Portugal

Cheapest flights from Missouri to Portugal
Explore the most affordable flight options available from Missouri to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septembre 16, 2025.

This Billigflug deal was found by Cheapflights users on 9/15. 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 Billigflug is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/273:14 pmSTL - OPO
2 stops13h 16mMultiple Airlines
mer. 11/126:00 amOPO - STL
1 stop13h 55mMultiple Airlines
Deal found 9/15$508
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 11/123:50 pmSTL - OPO
1 stop13h 50mLufthansa
mer. 11/196:00 amOPO - STL
1 stop13h 55mLufthansa
Deal found 9/16$522
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/26:00 amMCI - LIS
2 stops20h 55mUnited Airlines
mar. 12/911:20 amLIS - MCI
2 stops33h 01mUnited Airlines
Deal found 9/14$526
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 12/38:08 amMCI - LIS
2 stops20h 07mUnited Airlines
mar. 12/911:20 amLIS - MCI
2 stops29h 19mUnited Airlines
Deal found 9/14$531
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 11/165:00 pmMCI - OPO
1 stop10h 30mUnited Airlines
mar. 12/26:00 amOPO - MCI
2 stops38h 21mUnited Airlines
Deal found 9/15$532
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/278:20 amSTL - OPO
2 stops20h 10mUnited Airlines
mer. 11/126:00 amOPO - STL
2 stops40h 35mUnited Airlines
Deal found 9/15$532
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/25:45 pmMCI - LIS
1 stop10h 30mUnited Airlines
ven. 12/1211:20 amLIS - MCI
2 stops30h 42mUnited Airlines
Deal found 9/14$533
This United Airlines deal was found by Cheapflights users on 9/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 11/169:58 amMCI - OPO
2 stops17h 32mUnited Airlines
mer. 12/36:00 amOPO - MCI
2 stops21h 58mUnited Airlines
Deal found 9/16$533
This Mytrip deal was found by Cheapflights users on 9/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/176:35 pmMCI - LIS
2 stops32h 45mMultiple Airlines
mar. 11/255:00 amLIS - MCI
2 stops22h 50mMultiple Airlines
Deal found 9/16$534
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 12/314:05 pmSTL - LIS
1 stop10h 50mUnited Airlines
jeu. 1/1510:55 amLIS - STL
2 stops33h 35mUnited Airlines
Deal found 9/15$534
This United Airlines deal was found by Cheapflights users on 9/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 11/1211:05 amSTL - OPO
2 stops16h 25mUnited Airlines
mer. 11/196:00 amOPO - STL
1 stop13h 55mUnited Airlines
Deal found 9/16$534
This FlightHub deal was found by Cheapflights users on 9/14. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 11/1910:15 amMCI - LIS
2 stops40h 40mScandinavian Airlines
mer. 12/37:00 pmLIS - MCI
2 stops33h 44mScandinavian Airlines
Deal found 9/14$535

Cheapflights Fare Finder

 
Customize your flight search to find flights from Missouri to Portugal 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 septembre 16, 2025.
Use the filters below to find and compare flights from Missouri to Portugal that are best for you.

Fly from

Missouri

Fly to

Portugal

Route

Depart

Return

Price

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

lun. 10/27

5:58 pm-9:30 am

1 stop10h 32m

Porto

mer. 11/12

6:00 am-1:55 pm

1 stop13h 55m

$527

Kansas CityLisbon

MCI - LIS

MCILIS

Kansas City

mer. 12/3

8:08 am-10:15 am

2 stops20h 07m

Lisbon Humberto Delgado

mar. 12/9

11:20 am-2:21 pm

2 stops33h 01m

$531

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

mar. 3/3

8:30 am-10:15 am

1 stop19h 45m

Lisbon Humberto Delgado

mar. 3/17

11:20 am-2:18 pm

2 stops31h 58m

$532

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

lun. 11/17

5:00 pm-9:30 am

1 stop10h 30m

Porto

ven. 12/5

12:30 pm-2:21 pm

2 stops31h 51m

$532

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

mar. 11/18

5:00 pm-9:30 am

1 stop10h 30m

Porto

ven. 12/5

12:30 pm-2:21 pm

2 stops31h 51m

$532

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

dim. 11/16

6:00 am-9:30 am

2 stops21h 30m

Porto

mar. 12/2

6:00 am-9:58 pm

2 stops21h 58m

$532

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

dim. 11/16

9:58 am-9:30 am

2 stops17h 32m

Porto

ven. 12/5

12:30 pm-2:21 pm

2 stops31h 51m

$532

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

lun. 11/17

5:00 pm-9:30 am

1 stop10h 30m

Porto

mar. 12/2

6:00 am-2:21 pm

2 stops38h 21m

$532

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

dim. 11/16

5:00 pm-9:30 am

1 stop10h 30m

Porto

mer. 12/3

6:00 am-9:58 pm

2 stops21h 58m

$532

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

lun. 11/17

6:00 am-9:30 am

2 stops21h 30m

Porto

mer. 12/3

6:00 am-9:58 pm

2 stops21h 58m

$532

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 51 results
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Best time to book a flight from Missouri to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from Missouri 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 Missouri to Portugal

What is the cheapest month to book a flight from Missouri to Portugal?

Currently, January is the cheapest month in which you can book a flight from Missouri to Portugal (average of $612). Flying from Missouri to Portugal in June is currently the most expensive (average of $1,127). 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 MO to PT?

Find hourly flight availability from Missouri to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septembre 16, 2025.

When flying from Missouri to Portugal, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Related info for your journey

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

  • How long is the flight from Missouri to Portugal?

    United Airlines and Delta can get you from Missouri to Portugal in just under 14h 24m. Your travel time can differ by up to 5h 43m. Missouri and Portugal are separated by a distance of 4398 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Missouri to Portugal one-way?

    $358 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on KLM and Air Canada, with prices starting from $358 and $370, respectively.

  • Can I find deals for flights from Missouri to Portugal that include hotel bookings?

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

  • How can I find direct flights from Missouri to Portugal?

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

  • Can I find deals for business class flights from Missouri to Portugal?

    Yes. Cheapflights offers flight deals from Missouri to Portugal 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 Missouri to Portugal?

    Currently, January is the cheapest month in which you can book a flight from Missouri to Portugal (average of $612). Flying from Missouri to Portugal in June is currently the most expensive (average of $1,127). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Missouri to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Missouri to Portugal

Discover the top 10 airlines that operate flights from Missouri to Portugal. 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 septembre 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$525Average$905FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$553Average$855FlexibilityNo cancel feeOn-time72%
United AirlinesCheapest$564Average$1,105FlexibilityNo cancel feeOn-time69%
DeltaCheapest$579Average$877FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$587Average$833FlexibilityNo cancel feeOn-time70%
KLMCheapest$597Average$814FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$601Average$1,166FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$614Average$1,134FlexibilityNo cancel feeOn-time71%
Air FranceCheapest$642Average$793FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$819Average$1,103FlexibilityNo cancel feeOn-time67%

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