--- title: "Cheap Flights to Castanheiro do Sul from CA $408 - Expedia.ca" description: "Looking for cheap flights to Castanheiro do Sul? Few airlines offer no change fee on selected flights to your favourite destinations. Earn double rewards with airline miles + Expedia points. Get your last minute tickets now!" canonical: "https://www.expedia.ca/Cheap-Flights-To-Castanheiro-Do-Sul.d791248150056636416.Travel-Guide-Flights" language: en-CA market: CA currency: CAD prices_as_of: 2026-11-14T04:21:23Z --- # Cheap Flights to Castanheiro do Sul from CA $408 [View CA $408 flight on Fri, Dec 4, 2026](https://www.expedia.ca/Flights-Search?leg1=from:YQB,to:OPO,departure:04/12/2026TANYT&trip=oneway&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:407.71&airProductToken=AQpvCjwI1KYBEgQ3MzEwGJgMIJjOASjv9J4DMOf1ngM4UUAAWAFqA0JHVHIIVjBCR1Q2Q096CgjQiAESBDczMTAKLwjUpgESAzc2NBiYzgEg7nMoqveeAzDJ-p4DOFFAAVgBagNCR1RyCFYwQkdUNkNPEgoIARABGAEqAlRTGAEiBAgBEAEoAigDKAQwDQ) ## Popular airlines [TAP Portugal](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:Castanheiro%20do%20Sul,%20São%20João%20da%20Pesqueira,%20Viseu%20District,%20Portugal,departure:28/11/2026TANYT&leg2=from:Castanheiro%20do%20Sul,%20São%20João%20da%20Pesqueira,%20Viseu%20District,%20Portugal,to:CMH,departure:05/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"TP"}}]) [Lufthansa](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:Castanheiro%20do%20Sul,%20São%20João%20da%20Pesqueira,%20Viseu%20District,%20Portugal,departure:28/11/2026TANYT&leg2=from:Castanheiro%20do%20Sul,%20São%20João%20da%20Pesqueira,%20Viseu%20District,%20Portugal,to:CMH,departure:05/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LH"}}]) [KLM](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:Castanheiro%20do%20Sul,%20São%20João%20da%20Pesqueira,%20Viseu%20District,%20Portugal,departure:28/11/2026TANYT&leg2=from:Castanheiro%20do%20Sul,%20São%20João%20da%20Pesqueira,%20Viseu%20District,%20Portugal,to:CMH,departure:05/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"KL"}}]) [Air France](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:Castanheiro%20do%20Sul,%20São%20João%20da%20Pesqueira,%20Viseu%20District,%20Portugal,departure:28/11/2026TANYT&leg2=from:Castanheiro%20do%20Sul,%20São%20João%20da%20Pesqueira,%20Viseu%20District,%20Portugal,to:CMH,departure:05/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AF"}}]) [Iberia](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:Castanheiro%20do%20Sul,%20São%20João%20da%20Pesqueira,%20Viseu%20District,%20Portugal,departure:28/11/2026TANYT&leg2=from:Castanheiro%20do%20Sul,%20São%20João%20da%20Pesqueira,%20Viseu%20District,%20Portugal,to:CMH,departure:05/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"IB"}}]) [Swiss International Air Lines](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:Castanheiro%20do%20Sul,%20São%20João%20da%20Pesqueira,%20Viseu%20District,%20Portugal,departure:28/11/2026TANYT&leg2=from:Castanheiro%20do%20Sul,%20São%20João%20da%20Pesqueira,%20Viseu%20District,%20Portugal,to:CMH,departure:05/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LX"}}]) [Air Europa](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:Castanheiro%20do%20Sul,%20São%20João%20da%20Pesqueira,%20Viseu%20District,%20Portugal,departure:28/11/2026TANYT&leg2=from:Castanheiro%20do%20Sul,%20São%20João%20da%20Pesqueira,%20Viseu%20District,%20Portugal,to:CMH,departure:05/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UX"}}]) ## Alternative airports near Castanheiro do Sul Prices were available within the past 7 days. Prices and availability are subject to change. [Select flight to Dr. Francisco de Sa Carneiro OPO. Average driving time to city centre is 1 hour 36 minutes.](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:OPO,departure:28/11/2026TANYT&trip=oneway&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) 1 h 36 min · Search flights [Select flight to Viseu VSE. Average driving time to city centre is 1 hour 13 minutes.](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:VSE,departure:28/11/2026TANYT&trip=oneway&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) 1 h 13 min · Search flights [Select flight to Vila Real VRL. Closest option available. Average driving time to city centre is 40 minutes.](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:VRL,departure:28/11/2026TANYT&trip=oneway&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) 40 min · Search flights ## Find the cheapest month to fly from Columbus (CMH) to Porto (OPO) ### February is typically the cheapest month to fly From CA $1,022 - CA $1,121 per traveller. View flights in February Insights are based on prices from searches for economy trips of 10 days or less on our sites in the last 12 months. Insights are informative only and current prices may differ. ## Book with confidence ### Find Your Flights to Castanheiro do Sul OPO **Cheap flights to Castanheiro do Sul (** **OPO)** Get started finding a cheap flight to Castanheiro do Sul on Expedia by either choosing a deal on this page or using the search bar to enter your travel dates, origin airport, and whether you want a roundtrip or one-way airfare. You can filter for flexibility, number of stops, airline, and departure/arrival times to find the best flight for you. We recommend using the ‘Flexible Dates’ calendar at the top of the page to see the price of plane tickets on the surrounding dates. This allows you to pick the cheapest days to fly if your trip allows flexibility and score cheap flight deals to Castanheiro do Sul. Roundtrip prices range from CA $718 - CA $718, and one-ways Castanheiro do Sul start as low as CA $408. Be aware that choosing a non-stop flight can sometimes be more expensive while saving you time. And routes with connections may be available at a cheaper rate. **Airlines that fly to Castanheiro do Sul (** **OPO)** You have several options for which airline you choose to travel with to Castanheiro do Sul. There are 1 airlines flying into OPO: Air Transat. Cheap plane tickets may be available from different airlines at different times and with unique terms. It’s best to understand the details of each airline’s offer before judging its value. For example, if you plan to check a bag or bring a carry-on, check whether the cheap airfare deal includes a baggage allowance. If not, verify whether the baggage fee is higher than the difference of other airline plane ticket deals offering free checked/carry-on baggage in exchange for a slightly higher airfare. Additionally, your preferred frequent flyer membership programmes may influence your choice of cheap airline. Expedia allows you to enter your membership numbers during checkout to earn points from your airline and Expedia Rewards—all while getting a great deal and planning all your travel on one online platform. #### Find the best deals At Expedia, we source many flight deals from multiple providers, so you can easily find the best deals that are right for you. A great strategy for getting the best deals can be to make sure you book and travel at optimal times. Airfare to Castanheiro do Sul (OPO) varies throughout the year based on seasonal demand. You’ll see the lowest rates for roundtrips to OPO in December and in December for one-ways. #### Cancellation & flexibility To change or cancel eligible flights, go to ‘My Trips’ and navigate to your itinerary. If you booked within the last 24 hours, you might be able to cancel your flight for free. Learn more about flight changes or cancellations from our [customer service portal](https://www.expedia.ca/service/). Some plane tickets are available with no change fees, which you can filter for during your search. ## Travel information | Destination city name | Porto | | ----------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Destination airport | Porto Airport | | Destination airport IATA code | OPO | | Airlines serving | TAP Portugal, Lufthansa, KLM, Air France, Iberia, Swiss International Air Lines, Air Europa, Brussels Airlines, British Airways, Ryanair, SAS, easyJet, Turkish Airlines, Vueling Airlines, Air Canada, Luxair, American Airlines, Delta, United, LATAM Airlines Group, LOT-Polish Airlines, Finnair, Transavia France, Austrian Airlines, SATA International-Azores Airlines S.A., Eurowings, Ethiopian Airlines, Transavia, Singapore Airlines, Royal Air Maroc, Volotea, Azul, JetBlue Airways, Air Transat, WestJet, Qatar Airways | | Popular airline | TAP Portugal | ## Trending flights to Castanheiro do Sul Prices were available within the past 7 days and start at CA $408 for one-way flights and CA $718 for roundtrip, for the period specified. Prices and availability are subject to change. All deals One way Roundtrip [Select Air Transat flight, departing Fri, Dec 4 from Québec City to Porto, returning Thu, Dec 24, priced at CA $718 Found 1 day ago](https://www.expedia.ca/Flights-Search?leg1=from:YQB,to:OPO,departure:04/12/2026TANYT&leg2=from:OPO,to:YQB,departure:24/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:717.81&airProductToken=AQphCi8I1KYBEgQ3MzEwGJgMIJjOASjv9J4DMOf1ngM4T0AAWAFqA0JHVHIHTzBCR1QyQwouCNSmARIDNzY0GJjOASDucyiq954DMMn6ngM4T0ABWAFqA0JHVHIHTzBCR1QyQwphCi4I1KYBEgM3NjUY7nMgmM4BKJLRoAMwgdWgAzhPQABYAWoDQkdUcgdPMEJHVDJDCi8I1KYBEgQ3MzExGJjOASCYDCim1qADMIrXoAM4T0ABWAFqA0JHVHIHTzBCR1QyQxIMCAEQAhgBKgJUUzIAGAEiBAgBEAEoAigDKAQwDQ) Fri, Dec 4 - Thu, Dec 24 · YQB · OPO · Roundtrip \*Available to Expedia members.