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Cheap flights from Portsmouth to Baltimore from £569

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BWI
27 Aug — 3 Sep1
1 adult

Cheap flight deals from Portsmouth to Baltimore

Keep the following information in mind while searching for Portsmouth to Baltimore flight deals. Data was last updated 22 August 2025.

Round-trip from

£569

Popular in

July

Cheapest in

February

Average price

£609
5/10-12/10
  • 5/10-12/10
  • 4 total stops
  • 33h 15m total
  • Portsmouth to Baltimore
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£52 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease (£8 potential savings vs. average return price).
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Average for round-trip flights in August 2025
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Find flight deals from Portsmouth to Baltimore

Cheapest flights from Portsmouth to Baltimore
Explore the most affordable flight options available from Portsmouth to Baltimore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 August 2025.

Sun 5/1009:10SOU - BWI
2 stops15h 15mMultiple Airlines
Sun 12/1020:30BWI - SOU
2 stops18h 00mMultiple Airlines
Deal found 21/8£569

Cheapflights Fare Finder

 
Customise your flight search to find flights from Portsmouth to Baltimore 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 858,174 searches. Data last updated 22 August 2025.
Use the filters below to find and compare flights from Portsmouth to Baltimore that are best for you.

Fly from

Portsmouth

Fly to

Baltimore

Route

Depart

Return

Price

SouthamptonBaltimore

SOU - BWI

SOUBWI

Southampton Eastleigh

Sun 5/10

09:10-19:25

2 stops15h 15m

Baltimore/Washington

Sun 12/10

20:30-19:30

2 stops18h 00m

£569

SouthamptonBaltimore

SOU - BWI

SOUBWI

Southampton Eastleigh

Mon 29/9

08:40-19:45

2 stops16h 05m

£2,162

SouthamptonBaltimore

SOU - BWI

SOUBWI

Southampton Eastleigh

Mon 6/10

08:40-19:45

2 stops16h 05m

£2,703

Flights are sorted by cheapest return flights first.

Deals found on 20/8

Best time to book a flight from Portsmouth to Baltimore

Have a flexible travel schedule? Discover the best time to fly to Baltimore from Portsmouth with our price prediction graph.
Estimated return 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 Portsmouth to Baltimore

What is the cheapest month to book a flight from Portsmouth to Baltimore?

Currently, February is the cheapest month in which you can book a flight from Portsmouth to Baltimore (average of £565). Flying from Portsmouth to Baltimore in July is currently the most expensive (average of £946). 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 P0R to BWI?

Find hourly flight availability from Portsmouth to Baltimore. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 22 August 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portsmouth to Baltimore as you normally would.

Weekly flight availability from Portsmouth to Baltimore

Explore weekly flight availability from Portsmouth to Baltimore. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 22 August 2025.

The most flights from P0R to BWI are scheduled on a Monday (5 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (5 on average).

Related info for your journey

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

  • What airport do you fly into for flights to Baltimore from Portsmouth?

    For a flight from Portsmouth to Baltimore, you will be flying into Baltimore/Washington. Baltimore/Washington (BWI) is just 8.5 mi from the center of the city. Baltimore/Washington is the only Baltimore airport and it handles 0 inbound flights from Portsmouth per day. 12 airlines have flights to Baltimore/Washington from Portsmouth on a regular basis.

  • What are the most reliable airlines from Portsmouth to Baltimore?

    No one likes to see their flight delayed. When booking a flight from Portsmouth to Baltimore consider choosing Iberia (42%), American Airlines (40%) or Finnair (38%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Portsmouth to Baltimore?

    Looking at all options, your cheapest flight can be booked for £490. While the most popular route (Southampton Eastleigh - Baltimore/Washington) can be booked for £569 on average our data indicates £829 when flying from Portsmouth to Baltimore.

  • Can I find deals for flights from Portsmouth to Baltimore that include hotel bookings?

    Yes. In addition to deals on Portsmouth to Baltimore flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Portsmouth to Baltimore?

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

  • Can I find deals for business class flights from Portsmouth to Baltimore?

    Yes. Cheapflights offers flight deals from Portsmouth to Baltimore 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 Portsmouth to Baltimore?

    Currently, February is the cheapest month in which you can book a flight from Portsmouth to Baltimore (average of £565). Flying from Portsmouth to Baltimore in July is currently the most expensive (average of £946). 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

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Alternative routes for Portsmouth to Baltimore

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

Discover the top 10 airlines that operate flights from Portsmouth to Baltimore. 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 858,174 searches. Data last updated 22 August 2025.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapest£267Average£388FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
IcelandairCheapest£354Average£508FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
KLMCheapest£459Average£651FlexibilityNo cancel feeOn-time75%
Search KLM flights
FinnairCheapest£463Average£657FlexibilityNo cancel feeOn-time76%
Search Finnair flights
LufthansaCheapest£465Average£625FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air FranceCheapest£467Average£594FlexibilityNo cancel feeOn-time77%
Search Air France flights
British AirwaysCheapest£477Average£631FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£498Average£710FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest£504Average£568FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
IberiaCheapest£511Average£678FlexibilityNo cancel feeOn-time77%
Search Iberia flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Portsmouth to Baltimore?

Deals for Portsmouth to Baltimore flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Portsmouth to Baltimore?

Millions of users choose and trust Cheapflights to book the best flight deals from Portsmouth to Baltimore for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Portsmouth to Baltimore with no change fees?

Yes! Cheapflights helps users easily find flights from Portsmouth to Baltimore with no change fees.

Can Cheapflights notify me if prices for flights from Portsmouth to Baltimore become cheaper?

Not ready to book yet? You can track prices for flights from Portsmouth to Baltimore on Cheapflights with our Price Alert feature and get notified when better prices are available.

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