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Cheap flights from Portsmouth to Baltimore from £649

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 1/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BWI
29 Apr — 6 May1
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 24 April 2025.

Round-trip from

£681

One-way from

£649

Popular in

July

Cheapest in

February

Average price

£532
Delta
  • Delta
  • 12/9-29/9
  • 4 total stops
  • 46h 19m total
  • Portsmouth to Baltimore
Aer Lingus
  • Aer Lingus
  • 1/6
  • 2 total stops
  • 28h 35m total
  • Portsmouth to Baltimore
Highest demand for flights based on searches. 11% potential increase in price (£55 potential increase over avg. return price).
Cheapest flight prices on average. 1% potential price decrease (£8 potential savings vs. average return price).
Average for round-trip flights in April 2025

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 24 April 2025.

Fri 12/917:35SOU - BWI
2 stops28h 29mDelta
Mon 29/918:10BWI - SOU
2 stops17h 50mDelta
Deal found 23/4£681
Sat 7/609:40SOU - BWI
3 stops39h 49mMultiple Airlines
Sat 14/618:50BWI - SOU
3 stops32h 55mMultiple Airlines
Deal found 23/4£1,113

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 24 April 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

Fri 12/9

17:35-17:04

2 stops28h 29m

Baltimore/Washington

Sun 28/9

06:00-08:45

2 stops21h 45m

£681

SouthamptonBaltimore

SOU - BWI

SOUBWI

Southampton Eastleigh

Sat 7/6

09:40-20:29

3 stops39h 49m

Baltimore/Washington

Sat 14/6

18:50-08:45

3 stops32h 55m

£1,113

SouthamptonBaltimore

SOU - BWI

SOUBWI

Southampton Eastleigh

Sun 1/6

20:00-19:35

2 stops28h 35m

£649

Flights are sorted by cheapest return flights first.

Deals found on 23/4

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 24 April 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 24 April 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).

Rainfall in Baltimore by month

Plan your trip to Baltimore by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Baltimore ranges from 74.0 - 104.0 inches per month. July is typically the wettest month, when rainfall can reach 104.0 mm. February is typically the driest time to visit Baltimore when rainfall is around 74.0 mm.

Temperature in Baltimore by month

Plan your trip to Baltimore by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Baltimore, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 25.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 1.0 C).

Reviews of airlines servicing Baltimore

Get insights into the airlines that provide service to Baltimore. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Baltimore. Reviews last updated 24 April 2025.

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
8.0
Very Good

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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. 10 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 American Airlines (50%), Aer Lingus (50%) or Finnair (50%) 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 £487. While the most popular route (Southampton Eastleigh - Baltimore/Washington) can be booked for £610 on average our data indicates £883 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.

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 24 April 2025.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapest£271Average£431FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
IcelandairCheapest£360Average£554FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
KLMCheapest£464Average£702FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air FranceCheapest£472Average£610FlexibilityNo cancel feeOn-time77%
Search Air France flights
British AirwaysCheapest£484Average£654FlexibilityNo cancel feeOn-time70%
Search British Airways flights
FinnairCheapest£484Average£656FlexibilityNo cancel feeOn-time76%
Search Finnair flights
American AirlinesCheapest£497Average£718FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
IberiaCheapest£505Average£710FlexibilityNo cancel feeOn-time77%
Search Iberia flights
Virgin AtlanticCheapest£528Average£749FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Aer LingusCheapest£607Average£833FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

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