Flights from Louisville to Porto (SDF to OPO)

Discover more affordable routes and cheaper dates from Louisville to Porto (SDF to OPO) within a date range.

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  • US$737
    Allegiant AirAir TransatAir Transat
    12:19pm - 11:45am
    Fri Jun 20th 2025
    18h 26m
    Louisville (SDF) → Porto (OPO)
    2 Stops

    Fri Jun 20th 2025 Allegiant Air · G4 525 Depart at 12:19pm from Louisville (SDF) Fly for 2h 29m Arrive at 2:48pm in Fort Lauderdale (FLL)

    Layover in Fort Lauderdale for 3h 22m

    Fri Jun 20th 2025 Air Transat · TS 7619 Depart at 6:10pm from Fort Lauderdale (FLL) Fly for 3h 15m Arrive at 9:25pm in Toronto (YYZ)

    Layover in Toronto for 2h 30m

    Fri Jun 20th 2025 Air Transat · TS 764 Depart at 11:55pm from Toronto (YYZ) Fly for 6h 50m Arrive at 11:45am in Porto (OPO)

  • US$778
    Allegiant AirWestJetAir Transat
    12:19pm - 11:45am
    Fri Jun 20th 2025
    18h 26m
    Louisville (SDF) → Porto (OPO)
    2 Stops

    Fri Jun 20th 2025 Allegiant Air · G4 525 Depart at 12:19pm from Louisville (SDF) Fly for 2h 29m Arrive at 2:48pm in Fort Lauderdale (FLL)

    Layover in Fort Lauderdale for 2h 52m

    Fri Jun 20th 2025 WestJet · WS 1223 Depart at 5:40pm from Fort Lauderdale (FLL) Fly for 3h 20m Arrive at 9:00pm in Toronto (YYZ)

    Layover in Toronto for 2h 55m

    Fri Jun 20th 2025 Air Transat · TS 764 Depart at 11:55pm from Toronto (YYZ) Fly for 6h 50m Arrive at 11:45am in Porto (OPO)

  • US$573
    Allegiant AirAir TransatAir Transat
    12:04pm - 11:45am
    Mon Jun 16th 2025
    18h 41m
    Louisville (SDF) → Porto (OPO)
    2 Stops

    Mon Jun 16th 2025 Allegiant Air · G4 513 Depart at 12:04pm from Louisville (SDF) Fly for 2h 29m Arrive at 2:33pm in Fort Lauderdale (FLL)

    Layover in Fort Lauderdale for 3h 37m

    Mon Jun 16th 2025 Air Transat · TS 7619 Depart at 6:10pm from Fort Lauderdale (FLL) Fly for 3h 15m Arrive at 9:25pm in Toronto (YYZ)

    Layover in Toronto for 2h 30m

    Mon Jun 16th 2025 Air Transat · TS 764 Depart at 11:55pm from Toronto (YYZ) Fly for 6h 50m Arrive at 11:45am in Porto (OPO)

  • US$725
    Allegiant AirWestJetAir Transat
    12:04pm - 11:45am
    Mon Jun 16th 2025
    18h 41m
    Louisville (SDF) → Porto (OPO)
    2 Stops

    Mon Jun 16th 2025 Allegiant Air · G4 513 Depart at 12:04pm from Louisville (SDF) Fly for 2h 29m Arrive at 2:33pm in Fort Lauderdale (FLL)

    Layover in Fort Lauderdale for 3h 7m

    Mon Jun 16th 2025 WestJet · WS 1223 Depart at 5:40pm from Fort Lauderdale (FLL) Fly for 3h 20m Arrive at 9:00pm in Toronto (YYZ)

    Layover in Toronto for 2h 55m

    Mon Jun 16th 2025 Air Transat · TS 764 Depart at 11:55pm from Toronto (YYZ) Fly for 6h 50m Arrive at 11:45am in Porto (OPO)

  • US$744
    Allegiant AirPorter AirlinesAir Transat
    12:04pm - 11:45am
    Mon Jun 16th 2025
    18h 41m
    Louisville (SDF) → Porto (OPO)
    2 Stops

    Mon Jun 16th 2025 Allegiant Air · G4 513 Depart at 12:04pm from Louisville (SDF) Fly for 2h 29m Arrive at 2:33pm in Fort Lauderdale (FLL)

    Layover in Fort Lauderdale for 3h 37m

    Mon Jun 16th 2025 Porter Airlines · PD 518 Depart at 6:10pm from Fort Lauderdale (FLL) Fly for 3h 15m Arrive at 9:25pm in Toronto (YYZ)

    Layover in Toronto for 2h 30m

    Mon Jun 16th 2025 Air Transat · TS 764 Depart at 11:55pm from Toronto (YYZ) Fly for 6h 50m Arrive at 11:45am in Porto (OPO)

  • US$675
    Allegiant AirAir TransatAir Transat
    9:34am - 11:45am
    Wed Jun 18th 2025
    21h 11m
    Louisville (SDF) → Porto (OPO)
    2 Stops

    Wed Jun 18th 2025 Allegiant Air · G4 527 Depart at 9:34am from Louisville (SDF) Fly for 2h 29m Arrive at 12:03pm in Fort Lauderdale (FLL)

    Layover in Fort Lauderdale for 6h 7m

    Wed Jun 18th 2025 Air Transat · TS 7619 Depart at 6:10pm from Fort Lauderdale (FLL) Fly for 3h 15m Arrive at 9:25pm in Toronto (YYZ)

    Layover in Toronto for 2h 30m

    Wed Jun 18th 2025 Air Transat · TS 764 Depart at 11:55pm from Toronto (YYZ) Fly for 6h 50m Arrive at 11:45am in Porto (OPO)

  • US$749
    Allegiant AirPorter AirlinesAir Transat
    9:34am - 11:45am
    Wed Jun 18th 2025
    21h 11m
    Louisville (SDF) → Porto (OPO)
    2 Stops

    Wed Jun 18th 2025 Allegiant Air · G4 527 Depart at 9:34am from Louisville (SDF) Fly for 2h 29m Arrive at 12:03pm in Fort Lauderdale (FLL)

    Layover in Fort Lauderdale for 6h 7m

    Wed Jun 18th 2025 Porter Airlines · PD 518 Depart at 6:10pm from Fort Lauderdale (FLL) Fly for 3h 15m Arrive at 9:25pm in Toronto (YYZ)

    Layover in Toronto for 2h 30m

    Wed Jun 18th 2025 Air Transat · TS 764 Depart at 11:55pm from Toronto (YYZ) Fly for 6h 50m Arrive at 11:45am in Porto (OPO)

  • US$1472
    FinnairFinnairAir Europa
    2:32pm - 7:20pm
    Mon Jun 16th 2025
    23h 48m
    Louisville (SDF) → Porto (OPO)
    2 Stops

    Mon Jun 16th 2025 Finnair · AY 5702 Depart at 2:32pm from Louisville (SDF) Fly for 2h 23m Arrive at 3:55pm in Dallas (DFW)

    Layover in Dallas for 5h 45m

    Mon Jun 16th 2025 Finnair · AY 5644 Depart at 9:40pm from Dallas (DFW) Fly for 9h 40m Arrive at 2:20pm in Madrid (MAD)

    Layover in Madrid for 4h 45m

    Tue Jun 17th 2025 Air Europa · UX 1141 Depart at 7:05pm from Madrid (MAD) Fly for 1h 15m Arrive at 7:20pm in Porto (OPO)

  • US$2710.47
    Aer LingusAer LingusRyanair
    5:17pm - 10:35pm
    Wed Jun 18th 2025
    24h 18m
    Louisville (SDF) → Porto (OPO)
    2 Stops

    Wed Jun 18th 2025 Aer Lingus · EI 7484 Depart at 5:17pm from Louisville (SDF) Fly for 1h 33m Arrive at 5:50pm in Chicago (ORD)

    Layover in Chicago for 3h 5m

    Wed Jun 18th 2025 Aer Lingus · EI 124 Depart at 8:55pm from Chicago (ORD) Fly for 7h 25m Arrive at 10:20am in Dublin (DUB)

    Layover in Dublin for 9h 50m

    Thu Jun 19th 2025 Ryanair · FR 7072 Depart at 8:10pm from Dublin (DUB) Fly for 2h 25m Arrive at 10:35pm in Porto (OPO)

  • US$1426
    FinnairFinnairIberia Airlines
    2:32pm - 7:55pm
    Mon Jun 16th 2025
    24h 23m
    Louisville (SDF) → Porto (OPO)
    2 Stops

    Mon Jun 16th 2025 Finnair · AY 5702 Depart at 2:32pm from Louisville (SDF) Fly for 2h 23m Arrive at 3:55pm in Dallas (DFW)

    Layover in Dallas for 5h 45m

    Mon Jun 16th 2025 Finnair · AY 5644 Depart at 9:40pm from Dallas (DFW) Fly for 9h 40m Arrive at 2:20pm in Madrid (MAD)

    Layover in Madrid for 5h 20m

    Tue Jun 17th 2025 Iberia Airlines · IB 1153 Depart at 7:40pm from Madrid (MAD) Fly for 1h 15m Arrive at 7:55pm in Porto (OPO)

  • US$1300
    FinnairFinnairRyanair
    2:32pm - 10:25pm
    Mon Jun 16th 2025
    26h 53m
    Louisville (SDF) → Porto (OPO)
    2 Stops

    Mon Jun 16th 2025 Finnair · AY 5702 Depart at 2:32pm from Louisville (SDF) Fly for 2h 23m Arrive at 3:55pm in Dallas (DFW)

    Layover in Dallas for 5h 45m

    Mon Jun 16th 2025 Finnair · AY 5644 Depart at 9:40pm from Dallas (DFW) Fly for 9h 40m Arrive at 2:20pm in Madrid (MAD)

    Layover in Madrid for 7h 45m

    Tue Jun 17th 2025 Ryanair · FR 5482 Depart at 10:05pm from Madrid (MAD) Fly for 1h 20m Arrive at 10:25pm in Porto (OPO)

  • US$698
    BREEZEWestJetAir Transat
    8:58pm - 11:45am
    Thu Jun 19th 2025
    33h 47m
    Louisville (SDF) → Porto (OPO)
    2 Stops

    Thu Jun 19th 2025 BREEZE · MX 753 Depart at 8:58pm from Louisville (SDF) Fly for 2h 28m Arrive at 11:26pm in Fort Myers (RSW)

    Layover in Fort Myers for 16h 4m

    Fri Jun 20th 2025 WestJet · WS 1185 Depart at 3:30pm from Fort Myers (RSW) Fly for 3h 10m Arrive at 6:40pm in Toronto (YYZ)

    Layover in Toronto for 5h 15m

    Fri Jun 20th 2025 Air Transat · TS 764 Depart at 11:55pm from Toronto (YYZ) Fly for 6h 50m Arrive at 11:45am in Porto (OPO)

  • US$654
    BREEZEWestJetAir Transat
    7:58pm - 11:45am
    Thu Jun 19th 2025
    34h 47m
    Louisville (SDF) → Porto (OPO)
    2 Stops

    Thu Jun 19th 2025 BREEZE · MX 105 Depart at 7:58pm from Louisville (SDF) Fly for 2h 8m Arrive at 10:06pm in Tampa (TPA)

    Layover in Tampa for 20h 19m

    Fri Jun 20th 2025 WestJet · WS 1247 Depart at 6:25pm from Tampa (TPA) Fly for 2h 58m Arrive at 9:23pm in Toronto (YYZ)

    Layover in Toronto for 2h 32m

    Fri Jun 20th 2025 Air Transat · TS 764 Depart at 11:55pm from Toronto (YYZ) Fly for 6h 50m Arrive at 11:45am in Porto (OPO)

  • US$1300
    FinnairFinnairRyanair
    2:32pm - 6:50am
    Mon Jun 16th 2025
    35h 18m
    Louisville (SDF) → Porto (OPO)
    2 Stops

    Mon Jun 16th 2025 Finnair · AY 5702 Depart at 2:32pm from Louisville (SDF) Fly for 2h 23m Arrive at 3:55pm in Dallas (DFW)

    Layover in Dallas for 5h 45m

    Mon Jun 16th 2025 Finnair · AY 5644 Depart at 9:40pm from Dallas (DFW) Fly for 9h 40m Arrive at 2:20pm in Madrid (MAD)

    Layover in Madrid for 16h 10m

    Wed Jun 18th 2025 Ryanair · FR 572 Depart at 6:30am from Madrid (MAD) Fly for 1h 20m Arrive at 6:50am in Porto (OPO)

  • US$677
    Allegiant AirAir TransatAir Transat
    12:04pm - 6:45am
    Mon Jun 16th 2025
    37h 41m
    Louisville (SDF) → Porto (OPO)
    2 Stops

    Mon Jun 16th 2025 Allegiant Air · G4 513 Depart at 12:04pm from Louisville (SDF) Fly for 2h 29m Arrive at 2:33pm in Fort Lauderdale (FLL)

    Layover in Fort Lauderdale for 20h 52m

    Tue Jun 17th 2025 Air Transat · TS 845 Depart at 11:25am from Fort Lauderdale (FLL) Fly for 3h 25m Arrive at 2:50pm in Montreal (YUL)

    Layover in Montreal for 4h 35m

    Tue Jun 17th 2025 Air Transat · TS 174 Depart at 7:25pm from Montreal (YUL) Fly for 6h 20m Arrive at 6:45am in Porto (OPO)

  • US$1246.68
    Sun Country AirlinesAer LingusRyanair
    6:45pm - 4:55pm
    Fri Jun 20th 2025
    41h 10m
    Louisville (SDF) → Porto (OPO)
    2 Stops

    Fri Jun 20th 2025 Sun Country Airlines · SY 1792 Depart at 6:45pm from Louisville (SDF) Fly for 2h 2m Arrive at 7:47pm in Minneapolis (MSP)

    Layover in Minneapolis for 23h 8m

    Sat Jun 21st 2025 Aer Lingus · EI 88 Depart at 6:55pm from Minneapolis (MSP) Fly for 7h 40m Arrive at 8:35am in Dublin (DUB)

    Layover in Dublin for 5h 55m

    Sun Jun 22nd 2025 Ryanair · FR 7072 Depart at 2:30pm from Dublin (DUB) Fly for 2h 25m Arrive at 4:55pm in Porto (OPO)

  • US$1331
    Sun Country AirlinesAer LingusRyanair
    6:45pm - 4:55pm
    Fri Jun 20th 2025
    41h 10m
    Louisville (SDF) → Porto (OPO)
    2 Stops

    Fri Jun 20th 2025 Sun Country Airlines · SY 1792 Depart at 6:45pm from Louisville (SDF) Fly for 2h 2m Arrive at 7:47pm in Minneapolis (MSP)

    Layover in Minneapolis for 23h 8m

    Sat Jun 21st 2025 Aer Lingus · EI 88 Depart at 6:55pm from Minneapolis (MSP) Fly for 7h 40m Arrive at 8:35am in Dublin (DUB)

    Layover in Dublin for 5h 55m

    Sun Jun 22nd 2025 Ryanair · FR 7072 Depart at 2:30pm from Dublin (DUB) Fly for 2h 25m Arrive at 4:55pm in Porto (OPO)

@sarahbb1
Sarah Belizaire
@sarahbb1

Have flexible travel plans or looking for alternative routes given the chaos? Check out all the connection possibilities via a super helpful site created by @ismaelyws flightlist.io thanks to @andy_travels for the recommendation #travel #flights

@eyupitsjohn
John Ford
@eyupitsjohn

There seem to be lots of sites launching at the moment that promise to find you cheap flights but not many have the professional finish of Flightlist by @ismaelyws #travel #flights

@oamingsonaa
Roaming Sonaa
@roamingsonaa

For people wanting to maximize their trips, Flightlist is my newest travel hack for uncovering the coolest routes at irresistible prices. No stress, no annoying ads — just seamless flight booking with amazing functionality.

@andy_travels
Andy Travels
@andy_travels

@ismaelyws Just tried out Flightlist for the first time. Really nice idea, well made, and just what I need at the moment 👍

@travelwitbender
Travel With Bender
@travelwitbender

Did you spot my recent article about how to score cheap one way flights? ✈️ FlightList is my new secret tool for discovering cheap routes, within a departure date range. Plus you can also search by country/region for departures & destinations. Powerful! 💪

@travel.with.wes
Wesley Mergard
@travel.with.wes

One useful tool I've found for evaluating different departure and return dates is called FlightList.io. You can quickly scan different travel date ranges, carriers and one way flight options to easily determine the cheapest flight combinations for your trip.

Explore Flight Options

FlightList Blog

Flightlist Interviews 7 Travel Experts On Why They Book One Way Flights
Flightlist Interviews 7 Travel Experts On Why They Book One Way Flights
Why I built FlightList & solved my own problem
Why I Built FlightList & Solved My Own Problem

About FlightList

❝Founded by a remote worker and frequent flyer, who discovered that the best deals come from searching with flexible dates across entire countries or regions. Our streamlined platform strips away the clutter found on typical travel sites, offering a clean interface that focuses solely on finding cost-effective flights. Unlike traditional booking sites, FlightList allows users to search by date ranges and broad destinations, unveiling opportunities that rigid parameters often miss. Our filters let travelers tailor searches to their specific needs, whether they're digital nomads seeking their next adventure or budget-conscious explorers maximizing travel funds. We've made finding cheap flights into a quicker and easier experience, empowering users to discover just how far their budget can take them.❞

- Hans Desjarlais, Founder Hans Desjarlais Profile Picture