Cheapest return flights from Denver to Porto in April from $655

Best time to book flights for Denver (DEN) to Porto (OPO) flights at AirHint

AirHint found the following cheapest return flights from Denver (DEN) to Porto (OPO) in April 2025 (see full year).

Return flights

01 Apr - 09 Apr Turkish Airlines
06 Apr - 14 Apr Turkish Airlines
08 Apr - 16 Apr Turkish Airlines
13 Apr - 21 Apr Turkish Airlines
15 Apr - 23 Apr Turkish Airlines
04 Apr - 12 Apr Turkish Airlines
11 Apr - 19 Apr Turkish Airlines
18 Apr - 26 Apr Turkish Airlines
20 Apr - 28 Apr Turkish Airlines
22 Apr - 30 Apr Turkish Airlines
25 Apr - 03 May Turkish Airlines
27 Apr - 05 May Turkish Airlines
26 Apr - 04 May Sun Country Airlines
30 Apr - 08 May Aer Lingus
24 Apr - 02 May Sun Country Airlines
23 Apr - 01 May United

Also check the deals for one-way flights from Denver to Porto in April.

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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