Cheap Flights from New Castle from ฿1,925

View ฿1,925 flight on Tue, 9 Dec 2025Opens in a new window

Popular airlines from New Castle

  • Alaska Airlines

    Alaska Airlines

  • American Airlines

    American Airlines

  • Frontier Airlines

    Frontier Airlines

  • Delta

    Delta

  • United

    United

  • Southwest Airlines

    Southwest Airlines

  • JetBlue Airways

    JetBlue Airways

    notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
    deals illustration

    Book smarter

    Save up to 40% on select hotels after you book a flight*
    trophy illustration

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheapest flights from New Castle

These prices were available within the past 7 days. Prices quoted are per person, return, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, 12 Nov - Sat, 15 Nov
DEN
Denver
LAX
Los Angeles
฿5,255 Return, found 4 days ago
฿5,255
Return
found 4 days ago
Select Delta flight, departing Wed, 12 Nov from Denver to Los Angeles, returning Sat, 15 Nov, priced at ฿5,255 found 4 days ago
United
Fri, 12 Dec - Wed, 7 Jan
DEN
Denver
SAN
San Diego
฿6,145 Return, found 2 days ago
฿6,145
Return
found 2 days ago
Select United flight, departing Fri, 12 Dec from Denver to San Diego, returning Wed, 7 Jan, priced at ฿6,145 found 2 days ago
Delta
Thu, 4 Dec - Tue, 9 Dec
DEN
Denver
SAN
San Diego
฿6,310 Return, found 1 day ago
฿6,310
Return
found 1 day ago
Select Delta flight, departing Thu, 4 Dec from Denver to San Diego, returning Tue, 9 Dec, priced at ฿6,310 found 1 day ago
Delta
Wed, 12 Nov - Sat, 15 Nov
DEN
Denver
LAX
Los Angeles
฿6,410 Return, found 4 days ago
฿6,410
Return
found 4 days ago
Select Delta flight, departing Wed, 12 Nov from Denver to Los Angeles, returning Sat, 15 Nov, priced at ฿6,410 found 4 days ago
Delta
Thu, 4 Dec - Tue, 9 Dec
DEN
Denver
SAN
San Diego
฿6,465 Return, found 1 day ago
฿6,465
Return
found 1 day ago
Select Delta flight, departing Thu, 4 Dec from Denver to San Diego, returning Tue, 9 Dec, priced at ฿6,465 found 1 day ago
Delta
Wed, 12 Nov - Sun, 16 Nov
DEN
Denver
LAX
Los Angeles
฿6,530 Return, found 4 days ago
฿6,530
Return
found 4 days ago
Select Delta flight, departing Wed, 12 Nov from Denver to Los Angeles, returning Sun, 16 Nov, priced at ฿6,530 found 4 days ago
Delta
Wed, 19 Nov - Thu, 20 Nov
DEN
Denver
LAX
Los Angeles
฿6,800 Return, found 2 days ago
฿6,800
Return
found 2 days ago
Select Delta flight, departing Wed, 19 Nov from Denver to Los Angeles, returning Thu, 20 Nov, priced at ฿6,800 found 2 days ago
American Airlines
Thu, 4 Dec - Tue, 9 Dec
DEN
Denver
SAN
San Diego
฿6,835 Return, found 1 day ago
฿6,835
Return
found 1 day ago
Select American Airlines flight, departing Thu, 4 Dec from Denver to San Diego, returning Tue, 9 Dec, priced at ฿6,835 found 1 day ago
American Airlines
Thu, 4 Dec - Tue, 9 Dec
DEN
Denver
SAN
San Diego
฿6,995 Return, found 1 day ago
฿6,995
Return
found 1 day ago
Select American Airlines flight, departing Thu, 4 Dec from Denver to San Diego, returning Tue, 9 Dec, priced at ฿6,995 found 1 day ago
United
Fri, 12 Dec - Wed, 7 Jan
DEN
Denver
SAN
San Diego
฿7,130 Return, found 2 days ago
฿7,130
Return
found 2 days ago
Select United flight, departing Fri, 12 Dec from Denver to San Diego, returning Wed, 7 Jan, priced at ฿7,130 found 2 days ago

Flights from New Castle: Essential Travel Information

Cheapest flight from New Castle
฿5,255 (roundtrip)
Best airlines to fly from New Castle
Delta, Alaska Airlines, American Airlines, United
Cheapest month to fly from New Castle
November
New Castle IATA code
DEN
New Castle Country/State
Colorado
Airline ticket deals from New Castle
฿5,255 - ฿7,130

 

*Available to Expedia members.