BWI - OPO

$326 Find Cheap Flights from Baltimore to Porto - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$731
Typical prices: $847-$972
Multiple Airlines
Thu 11/29Tue 12/11
BWI - OPO • 3 stops
Cheapest one-way
$326
Typical prices: $350-$624
Multiple Airlines
Thu 2/15
BWI - OPO • 3 stops
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Flight Deals

Cheap Flights from Baltimore to Porto (BWI-OPO)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Baltimore to Porto

Sun, Nov 29 - Fri, Dec 11
Multiple Airlines Logo
7:40 pm - 6:55 pmBWI  Baltimore/Washington-OPO Porto
18h 15m3 stops Reykjavik Keflavik Intl Gdansk Rebiechowo Bergamo Orio Al Serio
Multiple Airlines Logo
6:35 pm - 5:46 pmOPO  Porto-BWI Baltimore/Washington
28h 11m2 stops Newark Atlanta Hartsfield-Jackson
$731Multiple Airlines
Wed, Apr 7 - Thu, Apr 15
Delta Logo
3:30 pm - 3:25 pmBWI  Baltimore/Washington-OPO Porto
18h 55m2 stops Boston Logan Intl Paris Charles de Gaulle
Delta Logo
5:00 am - 10:55 pmOPO  Porto-BWI Baltimore/Washington
22h 55m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County
$738Delta
Tue, Dec 8 - Wed, Dec 16
Delta Logo
2:00 pm - 10:35 amBWI  Baltimore/Washington-OPO Porto
15h 35m2 stops Atlanta Hartsfield-Jackson Paris Charles de Gaulle
Delta Logo
5:00 am - 6:13 pmOPO  Porto-BWI Baltimore/Washington
18h 13m2 stops Amsterdam Schiphol Boston Logan Intl
$744Delta
Sun, Jan 31 - Tue, Feb 2
Delta Logo
10:55 am - 10:35 amBWI  Baltimore/Washington-OPO Porto
18h 40m2 stops Boston Logan Intl Paris Charles de Gaulle
Delta Logo
11:30 am - 11:16 pmOPO  Porto-BWI Baltimore/Washington
16h 46m2 stops Paris Charles de Gaulle Detroit Metropolitan Wayne County
$745Delta
Sun, Mar 7 - Thu, Mar 11
United Airlines Logo
6:20 am - 9:30 amBWI  Baltimore/Washington-OPO Porto
22h 10m2 stops Chicago O'Hare Intl Newark
United Airlines Logo
12:35 pm - 10:02 amOPO  Porto-BWI Baltimore/Washington
26h 27m2 stops Newark Chicago O'Hare Intl
$747United Airlines
Sat, Apr 17 - Wed, Apr 21
United Airlines Logo
6:17 am - 9:45 amBWI  Baltimore/Washington-OPO Porto
46h 28m2 stops Chicago O'Hare Intl Newark
United Airlines Logo
6:00 am - 8:57 pmOPO  Porto-BWI Baltimore/Washington
19h 57m2 stops Frankfurt am Main Chicago O'Hare Intl
$748United Airlines
Sun, Jan 17 - Tue, Jan 26
Delta Logo
11:00 am - 10:35 amBWI  Baltimore/Washington-OPO Porto
18h 35m2 stops Atlanta Hartsfield-Jackson Paris Charles de Gaulle
Delta Logo
5:00 am - 4:39 pmOPO  Porto-BWI Baltimore/Washington
16h 39m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County
$749Delta
Sat, Apr 10 - Wed, Apr 14
Delta Logo
4:39 pm - 10:30 amBWI  Baltimore/Washington-OPO Porto
36h 51m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl
Delta Logo
5:00 am - 3:50 pmOPO  Porto-BWI Baltimore/Washington
15h 50m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County
$750Delta
Mon, Nov 30 - Fri, Dec 11
Multiple Airlines Logo
7:53 pm - 3:25 pmBWI  Baltimore/Washington-OPO Porto
14h 32m2 stops Atlanta Hartsfield-Jackson Amsterdam Schiphol
Multiple Airlines Logo
5:55 am - 4:57 pmOPO  Porto-BWI Baltimore/Washington
16h 02m2 stops Paris Charles de Gaulle Detroit Metropolitan Wayne County
$755Multiple Airlines
Mon, Apr 12 - Wed, Apr 14
Delta Logo
4:39 pm - 3:25 pmBWI  Baltimore/Washington-OPO Porto
17h 46m2 stops Atlanta Hartsfield-Jackson Paris Charles de Gaulle
Delta Logo
4:25 pm - 7:41 pmOPO  Porto-BWI Baltimore/Washington
32h 16m2 stops Paris Charles de Gaulle Atlanta Hartsfield-Jackson
$757Delta
Booking Insights

Price, demand and travel trends for Baltimore to Porto flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Which airline is the cheapest to fly from Baltimore to Porto?

Delta ($738) and United Airlines ($747) are the cheapest airlines to fly round-trip from Baltimore to Porto according to KAYAK data over the last 5 days.

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Key details for Baltimore to Porto flights

Cheapest flight

$326
One-way flight from Baltimore to Porto

When to book flights from Baltimore to Porto

Are your dates flexible? Find out the best times to travel from Baltimore to Porto based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Baltimore to Porto flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from Baltimore to Porto?

    Only Economy Class is available on flights from Baltimore to Porto.

  • Do I need a passport to fly from Baltimore to Porto?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • Have flight prices from Baltimore to Porto changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $731 to $7,057. That means the highest observed fare was about 10x higher than the lowest one.

  • How are flight prices from Baltimore to Porto looking right now?

    One-way fares from Baltimore to Porto are currently lower than usual. Average one-way flight prices are about $393, which is 16% below the typical average for this route.

  • What car rental options are available at Porto Airport (OPO)?

    Porto Airport (OPO) hosts 5 major car rental companies, with daily rates averaging $23 for economy cars. Top options include:

    • GREEN MOTION
    • Drive on Holiday
    • Klass Wagen
    • Goldcar Rental SP
    • Sixt

  • Which airports can I use when flying from Baltimore to Porto?

    Flights from Baltimore to Porto usually depart from Baltimore/Washington (BWI) and arrive at Porto (OPO).

  • Can I save money by using flexible dates for flights from Baltimore to Porto?

    Yes. Flexible dates can save you up to 11% on flights from Baltimore to Porto. Tuesday is the cheapest departure day at $869 round-trip on average, while Saturday is the most expensive at $972, a difference of $103.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What is the time difference between Baltimore and Porto?

    Porto is 5 hours ahead of Baltimore (Western European Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Porto?

    Some of the most popular sights in Porto are Ribeira Square, Avenida dos Aliados and Mercado do Bolhão. These are among the most viewed places in Porto on KAYAK.

Your guide to booking Baltimore to Porto flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Tuesday departure and avoid flying on Saturday. On this route, Tuesday flights average $869, about $103 less than Saturday fares (11% savings) based on the last 12 months.
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Porto Airport.

    • Ap Aeroporto Porto

More options for your flight from Baltimore to Porto

Complete your trip to Porto with a hotel stay or car rental

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