BWI - OPO

$222 Find Cheap Flights from Baltimore to Porto

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Baltimore to Porto departing on 4/15. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Porto

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Baltimore to Porto, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Baltimore to Porto, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$498
Multiple Airlines
Fri 2/6Wed 2/11
BWI - OPO • 2 stops
Cheapest one-way
$222
Multiple Airlines
Wed 4/15
BWI - OPO • 1 stop
Top airlines
Delta
Cheapest • from $510 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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We hope you love your trip to Porto!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Baltimore to Porto (BWI-OPO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Baltimore to Porto that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Baltimore to Porto

Fri, Feb 6 - Wed, Feb 11
Multiple Airlines Logo
7:40 pm - 7:35 pm
BWI
-
OPO
18h 55m
2 stops
Multiple Airlines Logo
6:45 am - 6:40 pm
OPO
-
BWI
16h 55m
2 stops
$498Multiple Airlines
Wed, Feb 18 - Wed, Feb 25
KLM Logo
7:06 pm - 3:25 pm
BWI
-
OPO
15h 19m
2 stops
KLM Logo
11:25 am - 10:53 pm
OPO
-
BWI
16h 28m
2 stops
$510KLM
Wed, Mar 11 - Thu, Mar 19
United Airlines Logo
8:09 am - 11:40 am
BWI
-
OPO
23h 31m
2 stops
United Airlines Logo
6:00 am - 9:43 pm
OPO
-
BWI
19h 43m
2 stops
$511United Airlines
Fri, Feb 6 - Wed, Feb 11
Multiple Airlines Logo
7:40 pm - 8:00 am
BWI
-
OPO
31h 20m
3 stops
Multiple Airlines Logo
6:45 am - 6:40 pm
OPO
-
BWI
16h 55m
2 stops
$532Multiple Airlines
Tue, Mar 17 - Tue, Mar 31
British Airways Logo
9:35 pm - 5:45 pm
BWI
-
OPO
16h 10m
1 stop
British Airways Logo
8:40 pm - 7:40 pm
OPO
-
BWI
28h 00m
1 stop
$538British Airways
Tue, Mar 17 - Tue, Mar 31
British Airways Logo
12:37 pm - 5:45 pm
BWI
-
OPO
25h 08m
2 stops
British Airways Logo
8:40 pm - 7:40 pm
OPO
-
BWI
28h 00m
1 stop
$542British Airways
Wed, Mar 18 - Tue, Mar 31
British Airways Logo
9:35 pm - 4:45 pm
BWI
-
OPO
15h 10m
1 stop
British Airways Logo
8:40 pm - 7:04 pm
OPO
-
BWI
27h 24m
2 stops
$548British Airways
Wed, Mar 11 - Wed, Mar 25
British Airways Logo
9:35 pm - 4:45 pm
BWI
-
OPO
15h 10m
1 stop
British Airways Logo
6:35 pm - 7:45 pm
OPO
-
BWI
29h 10m
1 stop
$551British Airways
Tue, Apr 14 - Thu, Apr 30
British Airways Logo
10:55 am - 7:30 pm
BWI
-
OPO
27h 35m
2 stops
British Airways Logo
7:55 pm - 7:34 pm
OPO
-
BWI
28h 39m
2 stops
$552British Airways
Tue, Apr 7 - Wed, Apr 15
American Airlines Logo
10:55 am - 7:40 am
BWI
-
OPO
15h 45m
2 stops
American Airlines Logo
8:20 am - 7:19 pm
OPO
-
BWI
15h 59m
2 stops
$554American Airlines
Booking Insights

KAYAK's insights & trends for Baltimore to Porto flights

Get data-powered insights and trends into flights from Baltimore to Porto to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Baltimore to Porto?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Baltimore to Porto were found on Delta ($510) and United Airlines ($511).

Good to know

Low seasonNovember
Cheapest flight$222
Best time to beat the crowds with an average 37% drop in price.
Most popular time to fly and prices are also 13% lower on average.
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
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Baltimore to Porto

  • What is the cheapest flight from Baltimore to Porto?

    In the last 3 days, the lowest price for a flight from Baltimore to Porto was $222 for a one-way ticket and $498 for a round-trip.

  • Do I need a passport to fly between Baltimore and Porto?

    A passport is required to fly from Baltimore to Porto.

  • Which airports will I be using when flying from Baltimore to Porto?

    When flying out of Baltimore you will be using Baltimore/Washington. You will be landing at Porto, also known as Porto.

  • Which aircraft models fly most regularly from Baltimore to Porto?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Baltimore to Porto?

    SkyTeam is the only airline alliance operating flights between Baltimore and Porto.

  • How does KAYAK find such low prices on flights from Baltimore to Porto?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Baltimore to Porto.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Baltimore to Porto?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from Baltimore is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Baltimore to Porto?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto with an airline and back to Baltimore with another airline. Booking your flights between Baltimore and OPO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Baltimore to Porto?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto from Baltimore up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Baltimore to Porto

 
See real verified KAYAK customer reviews for airlines flying from Baltimore to Porto. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Baltimore to Porto? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8066 reviews
8.1Boarding
8.5Crew
7.8Entertainment
7.9Comfort
7.2Food
Airline reviews

No in flight service, no explanation - FC got service, C+ did not, unsure about Economy. No turbulence to speak of, so I guess another way to cut cost, or promote health and well being of Delta employees? Also, boarding in MEM combined zones, and with overhead space already full on both flights after Zone 2/ Diamond, presents a huge challenge to find a space for a bag. Delta, other than point A to B, is no longer reasonable to fly - very poor experiences, not even taking into account the chastising at the gate and rude crews, across the board.

4.0 OkayUros, Jan 2026
MEM - ATL
Read more Delta reviews

No in flight service, no explanation - FC got service, C+ did not, unsure about Economy. No turbulence to speak of, so I guess another way to cut cost, or promote health and well being of Delta employees? Also, boarding in MEM combined zones, and with overhead space already full on both flights after Zone 2/ Diamond, presents a huge challenge to find a space for a bag. Delta, other than point A to B, is no longer reasonable to fly - very poor experiences, not even taking into account the chastising at the gate and rude crews, across the board.

It would have been better if the flight wasn't delayed by 2.5 hours

Delta’s staff is unmatched. From the gate agents, to the pilots, to the flight attendants… all top of the industry.

Delta flight Delay for ,more that two hours i.e original flight was 6.30 PM and it starts at 8.45 PM, When we connect Delta team for meal vouchers as it is late arrival in designation,But we did not get it as per delta policy , which is not good for mid night arrival,

Inexperienced boarding crew allowed too many bags on to a full flight and delayed takeoff causing a missed connection and unplanned overnight stay. There was a hotel at the airport but Delta would not pay for it offering only to shuttle me to an area hotel. Never even offerred so much as an apology by anyone working for Delta.

Staff was great! Kind and cordial! Middle seat row 28 seat B has a hump in it. Trays were getting stuck when putting down and up. Good flight

Departure was delayed resulting in me missing my connection. Delta did not autimatically find me another flight.

The seats weren’t reclining even though it wasn’t as exit seat

It was good because we traveled without luggage, carry on only.

I usually get upgraded so my experience is usually amazing. I did not get upgraded this time - which was fine - but the wifi had issues, the monitors were going in & out, & (though not Delta's fault) one of the gentlemen next to me desperately needed a shower.

Everything you need to know for your flight from Baltimore to Porto

Information on your arrival and departure airports