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$585+ Cheap flights from Denver (DEN) to Southampton (SOU)

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 7/2. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SOU
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
1 adult, Economy
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Cheap flight deals from Denver to Southampton

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Southampton (SOU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 8, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$801
(KLM)

One-way from

$585
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$667
Provider with most accurate pricing for Denver Intl-Southampton Eastleigh flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Southampton Eastleigh flights.
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From Denver Intl to Southampton Eastleigh
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One-way flight from Denver Intl to Southampton Eastleigh
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Highest demand for flights based on searches. 20% potential increase in price ($194 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find flight deals from Denver to Southampton

Cheapest flights from Denver to Southampton
Explore the most affordable flight options available from Denver to Southampton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 8, 2026.

This KLM deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/2212:50 pmDEN - SOU
2 stops21h 15mKLM
Sun 3/15:45 pmSOU - DEN
2 stops30h 39mKLM
Deal found 1/7$801
This Delta deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/136:30 amDEN - SOU
2 stops19h 15mDelta
Sat 8/229:15 amSOU - DEN
2 stops20h 43mDelta
Deal found 1/7$937
This Delta deal was found by Cheapflights users on 1/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/1412:59 pmDEN - SOU
2 stops20h 51mDelta
Sat 5/309:15 amSOU - DEN
2 stops20h 43mDelta
Deal found 1/6$969
This KAYAK deal was found by Cheapflights users on 1/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/137:22 amDEN - SOU
2 stops18h 18mAer Lingus
Sat 8/229:10 amSOU - DEN
1 stop16h 05mAer Lingus
Deal found 1/6$982
This Ovago deal was found by Cheapflights users on 1/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/1410:36 amDEN - SOU
2 stops25h 54mAer Lingus
Sat 5/309:10 amSOU - DEN
1 stop16h 05mAer Lingus
Deal found 1/6$1,043
This Ovago deal was found by Cheapflights users on 1/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/76:40 pmDEN - SOU
2 stops17h 50mAer Lingus
Sat 6/135:05 pmSOU - DEN
2 stops38h 02mAer Lingus
Deal found 1/8$1,270
This Ovago deal was found by Cheapflights users on 1/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/76:40 pmDEN - SOU
2 stops17h 50mMultiple Airlines
Sat 6/135:05 pmSOU - DEN
1 stop31h 54mMultiple Airlines
Deal found 1/8$1,330
This KAYAK deal was found by Cheapflights users on 1/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/22:22 pmDEN - SOU
2 stops19h 13mAer Lingus
Tue 7/149:10 amSOU - DEN
2 stops30h 19mAer Lingus
Deal found 1/6$1,503
This KAYAK deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/29:18 amDEN - SOU
2 stops16h 22mMultiple Airlines
Tue 7/149:10 amSOU - DEN
2 stops21h 57mMultiple Airlines
Deal found 1/7$1,517

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver to Southampton 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 2,558,603 searches. Data last updated January 8, 2026.
Use the filters below to find and compare flights from Denver to Southampton that are best for you.

Fly from

Denver

Fly to

Southampton

Route

Depart

Return

Price

DenverSouthampton

DEN - SOU

DENSOU

Denver Intl

Sun 2/22

12:50 pm-5:05 pm

2 stops21h 15m

Southampton Eastleigh

Sun 3/1

5:45 pm-5:24 pm

2 stops30h 39m

$801

DenverSouthampton

DEN - SOU

DENSOU

Denver Intl

Thu 5/14

10:36 am-7:30 pm

2 stops25h 54m

Southampton Eastleigh

Sat 5/30

9:10 am-6:15 pm

1 stop16h 05m

$1,043

DenverSouthampton

DEN - SOU

DENSOU

Denver Intl

Sun 6/7

6:40 pm-7:30 pm

2 stops17h 50m

Southampton Eastleigh

Sat 6/13

5:05 pm-12:07 am

2 stops38h 02m

$1,270

DenverSouthampton

DEN - SOU

DENSOU

Denver Intl

Sun 6/7

6:40 pm-7:30 pm

2 stops17h 50m

Southampton Eastleigh

Sat 6/13

5:05 pm-5:59 pm

1 stop31h 54m

$1,330

DenverSouthampton

DEN - SOU

DENSOU

Denver Intl

Thu 7/2

2:22 pm-4:35 pm

2 stops19h 13m

Southampton Eastleigh

Tue 7/14

9:10 am-8:29 am

2 stops30h 19m

$1,503

DenverSouthampton

DEN - SOU

DENSOU

Denver Intl

Thu 7/2

9:18 am-8:40 am

2 stops16h 22m

Southampton Eastleigh

Tue 7/14

9:10 am-12:07 am

2 stops21h 57m

$1,517

DenverSouthampton

DEN - SOU

DENSOU

Denver Intl

Wed 5/27

6:40 pm-7:25 pm

2 stops17h 45m

Southampton Eastleigh

Wed 6/3

9:10 am-6:15 pm

1 stop16h 05m

$4,186

DenverSouthampton

DEN - SOU

DENSOU

Denver Intl

Thu 7/2

8:10 pm-7:20 am

2 stops28h 10m

$585

DenverSouthampton

DEN - SOU

DENSOU

Denver Intl

Fri 5/22

8:00 pm-8:35 am

1 stop29h 35m

$866

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/5

Compare providers for flights from Denver to Southampton

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Denver to Southampton in January.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Denver-Southampton flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Denver-Southampton flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Denver-Southampton flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Denver-Southampton flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Denver-Southampton flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Denver to Southampton

Have a flexible travel schedule? Discover the best time to fly to Southampton from Denver with our price prediction graph.
Estimated round-trip 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 Denver to Southampton

What is the cheapest month to book a flight from Denver to Southampton?

Currently, August is the cheapest month in which you can book a flight from Denver to Southampton (average of $157). Flying from Denver to Southampton in June is currently the most expensive (average of $814). 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.

Reviews of airlines servicing Southampton

Get insights into the airlines that provide service to Southampton. 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 Southampton. Reviews last updated January 8, 2026.
See what other customers who have flown with Aer Lingus from Denver to Southampton have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.2
Good
1,427 reviews

Crew

8.0

Overall

7.2

Food

6.6

Comfort

7.1

Boarding

7.4

Entertainment

6.9

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.
Aer Lingus
7.2
Good
1,427 reviews
Aer Lingus
7.2
Good
1,427 reviews

Crew

8.0

Overall

7.2

Food

6.6

Comfort

7.1

Boarding

7.4

Entertainment

6.9

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.

Related info for your journey

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

  • How long is the flight from Denver to Southampton?

    A quick flight from Denver to Southampton can take about 21h 15m. KLM provides one of the quickest options available for as low as $801. The distance between Denver and Southampton is about 4645 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What is the cheapest airline to fly from Denver to Southampton round-trip?

    Our cheapest airline available from Denver to Southampton is Aer Lingus. Our recent data shows that you can find tickets from as low as $823 on this airline.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Denver to Southampton 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 Denver to Southampton?

    Currently, August is the cheapest month in which you can book a flight from Denver to Southampton (average of $157). Flying from Denver to Southampton in June is currently the most expensive (average of $814). 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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Top airline flying from Denver to Southampton

Discover the top airline that operate flights from Denver to Southampton. 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 2,558,603 searches. Data last updated January 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$823Average$1,067FlexibilityNo cancel feeOn-timeN/A

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