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Cheap flights from Portsmouth to Denver from £502

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 20/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — DEN
1 Aug — 8 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portsmouth to Denver

Enter your travel dates to find the best prices.

Cheapest flights from Portsmouth to Denver
Explore the most affordable flight options available from Portsmouth to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 July 2026.

Tue 1/920:00
SOU
-
DEN
2 stops47h 40m
Multiple Airlines
Tue 8/916:40
DEN
-
SOU
2 stops17h 10m
Multiple Airlines
Deal found 28/6£710
Tue 1/920:00
SOU
-
DEN
1 stop29h 15m
Aer Lingus
Tue 8/906:56
DEN
-
SOU
2 stops26h 54m
Aer Lingus
Deal found 28/6£776
Tue 3/1119:55
SOU
-
DEN
2 stops26h 15m
British Airways
Tue 17/1117:01
DEN
-
SOU
2 stops17h 39m
British Airways
Deal found 28/6£861
Sun 9/809:15
SOU
-
DEN
3 stops34h 25m
Multiple Airlines
Sun 16/816:40
DEN
-
SOU
3 stops33h 05m
Multiple Airlines
Deal found 30/6£934
Sat 21/1110:15
SOU
-
DEN
2 stops35h 55m
British Airways
Sat 5/1217:01
DEN
-
SOU
2 stops20h 44m
British Airways
Deal found 27/6£993
Sun 9/809:20
SOU
-
DEN
1 stop15h 55m
Aer Lingus
Sun 16/820:00
DEN
-
SOU
1 stop16h 30m
Aer Lingus
Deal found 30/6£1,090

Find flight deals from Portsmouth to Denver

Keep the following information in mind while searching for Portsmouth to Denver flight deals. Data was last updated 2 July 2026.

Round-trip from

£710

One-way from

£502

Popular in

July

Cheapest in

September

Average price

£755
1/9-8/9
  • 1/9-8/9
  • 4 total stops
  • 64h 50m total
  • Portsmouth to Denver
Search Deals
British Airways
  • British Airways
  • 20/9
  • 1 total stop
  • 31h 55m total
  • Portsmouth to Denver
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£57 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Portsmouth to Denver 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 2 July 2026.
Use the filters below to find and compare flights from Portsmouth to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SouthamptonDenver

SOU - DEN

SOUDEN

Southampton Eastleigh

Tue 1/9

20:00-18:15

1 stop29h 15m

Denver Intl

Tue 8/9

06:56-16:50

2 stops26h 54m

£776

SouthamptonDenver

SOU - DEN

SOUDEN

Southampton Eastleigh

Tue 3/11

19:55-15:10

2 stops26h 15m

Denver Intl

Tue 17/11

17:01-17:40

2 stops17h 39m

£861

SouthamptonDenver

SOU - DEN

SOUDEN

Southampton Eastleigh

Sun 9/8

09:15-12:40

3 stops34h 25m

Denver Intl

Sun 16/8

16:40-08:45

3 stops33h 05m

£934

SouthamptonDenver

SOU - DEN

SOUDEN

Southampton Eastleigh

Sat 21/11

10:15-15:10

2 stops35h 55m

Denver Intl

Sat 5/12

17:01-20:45

2 stops20h 44m

£993

SouthamptonDenver

SOU - DEN

SOUDEN

Southampton Eastleigh

Sun 9/8

09:20-18:15

1 stop15h 55m

Denver Intl

Sun 16/8

20:00-19:30

1 stop16h 30m

£1,090

SouthamptonDenver

SOU - DEN

SOUDEN

Southampton Eastleigh

Wed 15/7

09:15-23:27

2 stops21h 12m

Denver Intl

Sun 19/7

12:10-08:45

2 stops13h 35m

£1,163
Fastest return journey

SouthamptonDenver

SOU - DEN

SOUDEN

Southampton Eastleigh

Wed 15/7

09:20-18:15

1 stop15h 55m

Denver Intl

Sun 19/7

20:00-16:50

1 stop13h 50m

£1,246
Cheapest one-way

SouthamptonDenver

SOU - DEN

SOUDEN

Southampton Eastleigh

Sun 20/9

17:20-18:15

1 stop31h 55m

£502

SouthamptonDenver

SOU - DEN

SOUDEN

Southampton Eastleigh

Mon 31/8

19:55-16:30

2 stops27h 35m

£524
Fastest single journey

SouthamptonDenver

SOU - DEN

SOUDEN

Southampton Eastleigh

Mon 28/9

09:20-18:15

1 stop15h 55m

£524

Flights are sorted by cheapest return flights first.

Deals found on 28/6

Showing 1-10 of 15 resultsSorted by cheapest first
1
2

Best time to book a flight from Portsmouth to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver 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 Denver

What is the cheapest time of day to fly from P0R to DEN?

Find hourly flight availability from Portsmouth to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 2 July 2026.

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

Weekly flight availability from Portsmouth to Denver

Explore weekly flight availability from Portsmouth to Denver. 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 2 July 2026.

The most flights from P0R to DEN are scheduled on a Monday (16 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (16 on average).

Related info for your journey

Find useful and relevant information for your journey from Portsmouth to Denver. 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 Denver from Portsmouth?

    Most people fly into Denver Intl (DEN) if they book a flight to Denver from Portsmouth. On average, Denver Intl has 0 inbound flights from Portsmouth per day from 12 airlines. Denver Intl is conveniently located just 18.5 mi from Denver’s city center.

  • How long is the flight from Portsmouth to Denver?

    For as low as £861, Aer Lingus can have you in Denver from Portsmouth in 26h 15m. There are 4645 mi between Portsmouth and Denver. Both multi-stop and direct flights can be found to your destination and back.

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

    Consider Air Canada (81%), Brussels Airlines (81%) or United Airlines (81%) when booking your flight. These represent the most reliable airlines when flying from Portsmouth to Denver.

  • What are the cheapest flights from Portsmouth to Denver?

    Looking for the cheapest flight from Portsmouth to Denver? While on average our users pay £2,379, our data indicates the cheapest price to be £563. The most popular route (Southampton Eastleigh - Denver Intl), is priced around £736.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portsmouth to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 10 airlines flying from Portsmouth to Denver

Discover the top 10 airlines that operate flights from Portsmouth to Denver. 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 2 July 2026.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest£110Average£711FlexibilityNo cancel feeOn-time77%
Search Iberia flights
Air CanadaCheapest£285Average£574FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Brussels AirlinesCheapest£348Average£672FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
IcelandairCheapest£392Average£545FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapest£403Average£648FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Austrian AirlinesCheapest£420Average£624FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
British AirwaysCheapest£443Average£616FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest£448Average£639FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£451Average£698FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
JetBlueCheapest£459Average£627FlexibilityNo cancel feeOn-time62%
Search JetBlue flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights helps you search for flights from Portsmouth to Denver via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Cheapflights helps you find that perfect flight to Denver from Portsmouth by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Portsmouth to Denver flexibly with Cheapflights today.

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

Of course! You can now track prices for flights from Portsmouth to Denver and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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