Title: Cheap flights from Seattle to Alenquer (SEA to ALT) - Expedia.com ![Cachoeira Vale do Paraíso - Alenquer, PA, Brasil](https://images.trvl-media.com/place/6307745/1844a616-662d-465e-bb75-ef5890fa89bf.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/6307745/1844a616-662d-465e-bb75-ef5890fa89bf.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights from Seattle (SEA) to Alenquer (ALT) ## Popular airlines from Seattle-Tacoma International Airport (SEA) to Alenquer (ALT) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.com/Flights-Search?leg1=from:SEA,to:ALT,departure:4/5/2026TANYT&leg2=from:ALT,to:SEA,departure:4/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United [](https://www.expedia.com/Flights-Search?leg1=from:SEA,to:ALT,departure:4/5/2026TANYT&leg2=from:ALT,to:SEA,departure:4/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_WN.svg) Southwest Airlines [](https://www.expedia.com/Flights-Search?leg1=from:SEA,to:ALT,departure:4/5/2026TANYT&leg2=from:ALT,to:SEA,departure:4/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WN"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta [](https://www.expedia.com/Flights-Search?leg1=from:SEA,to:ALT,departure:4/5/2026TANYT&leg2=from:ALT,to:SEA,departure:4/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_F9.svg) Frontier Airlines [](https://www.expedia.com/Flights-Search?leg1=from:SEA,to:ALT,departure:4/5/2026TANYT&leg2=from:ALT,to:SEA,departure:4/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F9"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_B6.svg) JetBlue Airways [](https://www.expedia.com/Flights-Search?leg1=from:SEA,to:ALT,departure:4/5/2026TANYT&leg2=from:ALT,to:SEA,departure:4/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"B6"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AS.svg) Alaska Airlines [](https://www.expedia.com/Flights-Search?leg1=from:SEA,to:ALT,departure:4/5/2026TANYT&leg2=from:ALT,to:SEA,departure:4/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}]) - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our OneKeyCash [Learn about One Key](https://www.expedia.com/welcome-one-key) ## Frequently asked questions ### How much does a flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Alenquer (ALT) cost? ### What is the cheapest month to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Alenquer (ALT)? ### Which airlines fly direct from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Alenquer (ALT)? ### How do I find cheap flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Alenquer (ALT)? ### What is the best time to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Alenquer (ALT)? ### What is the earliest flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Alenquer (ALT)? ### Can you fly business or first class from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Alenquer (ALT)? ### How do I earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Alenquer (ALT) flight with Expedia? ### Is it cheaper to buy a plane ticket from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Alenquer (ALT) at the last minute? ### Is it cheaper to book a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Alenquer (ALT) flight and hotel package? ### Can I cancel or change the date of my flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Alenquer (ALT)? ## Travel information | Origin airport | Seattle - Tacoma Intl. | | ------------------- | ---------------------- | | Destination airport | Alenquer | | Distance | 5286 mi | ## Book with confidence # Seattle to Alenquer Flights The cheapest times to fly from Seattle to Alenquer On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to Alenquer are during the month of . You can find some of the cheapest flights from Seattle to Alenquer with Expedia's search tool and vast selection of airlines. The best time to book a flight from Seattle to Alenquer Sunday is one of the best days to book for cheap flights from Seattle to Alenquer: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance. How to find cheap round-trip tickets from Seattle to Alenquer Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to Alenquer in 2026\. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference\*. This is available for a small fee, and is free to One Key Gold and Platinum tier members. Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to Alenquer flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps. You could also save big by booking one of Expedia's [vacation packages](https://www.expedia.com/package-deals). Bundling together your Seattle to Alenquer airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures. \*Terms apply. Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023\. The percentages you see are averages. \*Flight schedules are subject to change. ## Explore a world of travel with Expedia - Lodging - Flights - Packages - Cars - [Hotels near Port of Santarem ](https://www.expedia.com/Port-Of-Santarem-Hotels.0-l6284218-0.Travel-Guide-Filter-Hotels) - [Santarém Hotels ](https://www.expedia.com/Santarem-Hotels.d3285.Travel-Guide-Hotels) - [Hotel Wedding Venues Hotels in Santarém ](https://www.expedia.com/Santarem-Hotels-Wedding-Hotels.0-0-d3285-tWeddingHotels.Travel-Guide-Filter-Hotels) - [Beach Hotels in Santarém ](https://www.expedia.com/Santarem-Hotels-Beach-Hotel.0-0-d3285-tBeachHotel.Travel-Guide-Filter-Hotels) - [Alter do Chão Hotels ](https://www.expedia.com/Alter-Do-Chao-Hotels.d6025063.Travel-Guide-Hotels) - [Pousadas in Alter do Chão ](https://www.expedia.com/Alter-Do-Chao-Pousadas.d6025063-aaPousadas.Travel-Guide-Accommodation) - [Mojuí dos Campos Hotels ](https://www.expedia.com/Mojui-Dos-Campos-Hotels.d553248634664623451.Travel-Guide-Hotels) - [Beach Hotels in Alter do Chão ](https://www.expedia.com/Alter-Do-Chao-Hotels-Beach-Hotel.0-0-d6025063-tBeachHotel.Travel-Guide-Filter-Hotels) - [Hotels with Bars in Alter do Chão ](https://www.expedia.com/Alter-Do-Chao-Hotels-Bar-Hotel.0-0-d6025063-tBarHotel.Travel-Guide-Filter-Hotels) - [Flights from Manaus (MAO) to Santarem (STM) ](https://www.expedia.com/lp/flights/mao/stm/manaus-to-santarem) - [Flights from Belem (BEL) to Santarem (STM) ](https://www.expedia.com/lp/flights/bel/stm/belem-to-santarem) - [Flights from São Paulo (GRU) to Santarem (STM) ](https://www.expedia.com/lp/flights/gru/stm/sao-paulo-to-santarem) - [Flights from Miami (MIA) to Santarem (STM) ](https://www.expedia.com/lp/flights/mia/stm/miami-to-santarem) - [Flights from New York (JFK) to Santarem (STM) ](https://www.expedia.com/lp/flights/jfk/stm/new-york-to-santarem) - [Flights from Budapest (BUD) to Santarem (STM) ](https://www.expedia.com/lp/flights/bud/stm/budapest-to-santarem) - [Flights from Rio de Janeiro (GIG) to Santarem (STM) ](https://www.expedia.com/lp/flights/gig/stm/rio-de-janeiro-to-santarem) - [Flights from Brasilia (BSB) to Santarem (STM) ](https://www.expedia.com/lp/flights/bsb/stm/brasilia-to-santarem) - [Flights from Fort Lauderdale (FLL) to Santarem (STM) ](https://www.expedia.com/lp/flights/fll/stm/fort-lauderdale-to-santarem) - [Flights from Tampa (TPA) to Santarem (STM) ](https://www.expedia.com/lp/flights/tpa/stm/tampa-to-santarem) - [Flights from Los Angeles (LAX) to Santarem (STM) ](https://www.expedia.com/lp/flights/lax/stm/los-angeles-to-santarem) - [Flights from Boston (BOS) to Santarem (STM) ](https://www.expedia.com/lp/flights/bos/stm/boston-to-santarem) - [Flights from Washington (DCA) to Santarem (STM) ](https://www.expedia.com/lp/flights/dca/stm/washington-to-santarem) - [Flights from Panama City (PTY) to Santarem (STM) ](https://www.expedia.com/lp/flights/pty/stm/panama-city-to-santarem) - [Flights from Bogotá (BOG) to Santarem (STM) ](https://www.expedia.com/lp/flights/bog/stm/bogota-to-santarem) - [Flights from Orlando (MCO) to Santarem (STM) ](https://www.expedia.com/lp/flights/mco/stm/orlando-to-santarem) - [Flights from Fortaleza (FOR) to Santarem (STM) ](https://www.expedia.com/lp/flights/for/stm/fortaleza-to-santarem) - [Flights from Sao Luis (SLZ) to Santarem (STM) ](https://www.expedia.com/lp/flights/slz/stm/sao-luis-to-santarem) - [Flights from Paramaribo (PBM) to Santarem (STM) ](https://www.expedia.com/lp/flights/pbm/stm/paramaribo-to-santarem) - [Flights from Atlanta (ATL) to Santarem (STM) ](https://www.expedia.com/lp/flights/atl/stm/atlanta-to-santarem) - [Flights from Minneapolis (MSP) to Santarem (STM) ](https://www.expedia.com/lp/flights/msp/stm/minneapolis-to-santarem) - [Flights from Dallas (DFW) to Santarem (STM) ](https://www.expedia.com/lp/flights/dfw/stm/dallas-to-santarem) - [Flights from San Jose (SJC) to Santarem (STM) ](https://www.expedia.com/lp/flights/sjc/stm/san-jose-to-santarem) - [Flights from Pittsburgh (PIT) to Santarem (STM) ](https://www.expedia.com/lp/flights/pit/stm/pittsburgh-to-santarem) - [Flights from Recife (REC) to Santarem (STM) ](https://www.expedia.com/lp/flights/rec/stm/recife-to-santarem) - [Flights from Louisville (SDF) to Santarem (STM) ](https://www.expedia.com/lp/flights/sdf/stm/louisville-to-santarem) - [Flights from Amsterdam (AMS) to Santarem (STM) ](https://www.expedia.com/lp/flights/ams/stm/amsterdam-to-santarem) - [Flights from Chicago (ORD) to Santarem (STM) ](https://www.expedia.com/lp/flights/ord/stm/chicago-to-santarem) - [Flights from New York (NYC) to Santarem (STM) ](https://www.expedia.com/lp/flights/nyc/stm/new-york-to-santarem) - [Flights from San Juan (SJU) to Santarem (STM) ](https://www.expedia.com/lp/flights/sju/stm/san-juan-to-santarem) - [Flights from Cartagena (CTG) to Santarem (STM) ](https://www.expedia.com/lp/flights/ctg/stm/cartagena-to-santarem) - [Flights from Washington (IAD) to Santarem (STM) ](https://www.expedia.com/lp/flights/iad/stm/washington-to-santarem) - [Flights from Rio de Janeiro (RIO) to Santarem (STM) ](https://www.expedia.com/lp/flights/rio/stm/rio-de-janeiro-to-santarem) - [Flights from Belo Horizonte (CNF) to Santarem (STM) ](https://www.expedia.com/lp/flights/cnf/stm/belo-horizonte-to-santarem) - [Flights from Joinville (JOI) to Santarem (STM) ](https://www.expedia.com/lp/flights/joi/stm/joinville-to-santarem) - [Flights from Florianópolis (FLN) to Santarem (STM) ](https://www.expedia.com/lp/flights/fln/stm/florianopolis-to-santarem) - [Flights from Bridgeport (BDR) to Santarem (STM) ](https://www.expedia.com/lp/flights/bdr/stm/bridgeport-to-santarem) - [Flights from Nassau (NAS) to Santarem (STM) ](https://www.expedia.com/lp/flights/nas/stm/nassau-to-santarem) - [Flights from Philadelphia (PHL) to Santarem (STM) ](https://www.expedia.com/lp/flights/phl/stm/philadelphia-to-santarem) - [Flights from Cape Town (CPT) to Santarem (STM) ](https://www.expedia.com/lp/flights/cpt/stm/cape-town-to-santarem) - [Flights from Richmond (RIC) to Santarem (STM) ](https://www.expedia.com/lp/flights/ric/stm/richmond-to-santarem) - [Flights from Itaituba (ITB) to Santarem (STM) ](https://www.expedia.com/lp/flights/itb/stm/itaituba-to-santarem) - [Flights from Montevideo (MVD) to Santarem (STM) ](https://www.expedia.com/lp/flights/mvd/stm/montevideo-to-santarem) - [Flights from Lisbon (LIS) to Santarem (STM) ](https://www.expedia.com/lp/flights/lis/stm/lisbon-to-santarem) - [Flights from Porto Alegre (POA) to Santarem (STM) ](https://www.expedia.com/lp/flights/poa/stm/porto-alegre-to-santarem) - [Flights from Santander (SDR) to Santarem (STM) ](https://www.expedia.com/lp/flights/sdr/stm/santander-to-santarem) - [Flights from Macapa (MCP) to Santarem (STM) ](https://www.expedia.com/lp/flights/mcp/stm/macapa-to-santarem) - [Flights from Doomadgee (DMD) to Santarem (STM) ](https://www.expedia.com/lp/flights/dmd/stm/doomadgee-to-santarem) - [Flights from Christiansted (STX) to Santarem (STM) ](https://www.expedia.com/lp/flights/stx/stm/christiansted-to-santarem) - [Flights from Seattle (SEA) to Santarem (STM) ](https://www.expedia.com/lp/flights/sea/stm/seattle-to-santarem) - [Flights from Kolkata (CCU) to Santarem (STM) ](https://www.expedia.com/lp/flights/ccu/stm/kolkata-to-santarem) - [Flights from Boa Vista (BVB) to Santarem (STM) ](https://www.expedia.com/lp/flights/bvb/stm/boa-vista-to-santarem) - [Flights from Tabatinga (TBT) to Santarem (STM) ](https://www.expedia.com/lp/flights/tbt/stm/tabatinga-to-santarem) - [Flights from Mexico City (MEX) to Santarem (STM) ](https://www.expedia.com/lp/flights/mex/stm/mexico-city-to-santarem) - [Flights from Cleveland (CLE) to Santarem (STM) ](https://www.expedia.com/lp/flights/cle/stm/cleveland-to-santarem) - [Flights from Detroit (DTW) to Santarem (STM) ](https://www.expedia.com/lp/flights/dtw/stm/detroit-to-santarem) - [Flights to Santarém ](https://www.expedia.com/Cheap-Flights-To-Santarem.d3285.Travel-Guide-Flights) - [Flights to Alter do Chão ](https://www.expedia.com/Cheap-Flights-To-Alter-Do-Chao.d6025063.Travel-Guide-Flights) - [Flights from Raiatea (RFP) to Santarem (STM) ](https://www.expedia.com/lp/flights/rfp/stm/raiatea-to-santarem) - [Flights from Belize City (BZE) to Santarem (STM) ](https://www.expedia.com/lp/flights/bze/stm/belize-city-to-santarem) - [Flights from Kars (KSY) to Santarem (STM) ](https://www.expedia.com/lp/flights/ksy/stm/kars-to-santarem) - [Flights from Candle (CDL) to Santarem (STM) ](https://www.expedia.com/lp/flights/cdl/stm/candle-to-santarem) - [Flights from Kimberley (KIM) to Santarem (STM) ](https://www.expedia.com/lp/flights/kim/stm/kimberley-to-santarem) - [Flights from Príncipe Airport (PCP) to Santarem (STM) ](https://www.expedia.com/lp/flights/pcp/stm/principe-island-to-santarem) - [Flights from Wilkes-Barre (AVP) to Santarem (STM) ](https://www.expedia.com/lp/flights/avp/stm/wilkes-barre-to-santarem) - [Flights from Toledo (TOL) to Santarem (STM) ](https://www.expedia.com/lp/flights/tol/stm/toledo-to-santarem) - [Flights from Guatemala City (GUA) to Santarem (STM) ](https://www.expedia.com/lp/flights/gua/stm/guatemala-city-to-santarem) - [Flights from Madison (DXE) to Santarem (STM) ](https://www.expedia.com/lp/flights/dxe/stm/madison-to-santarem) - [Flights from Cusco (CUZ) to Santarem (STM) ](https://www.expedia.com/lp/flights/cuz/stm/cusco-to-santarem) - [Flights from Florence (FLR) to Santarem (STM) ](https://www.expedia.com/lp/flights/flr/stm/florence-to-santarem) - [Flights from Tamchy (IKU) to Santarem (STM) ](https://www.expedia.com/lp/flights/iku/stm/tamchy-to-santarem) - [Flights from San Salvador (SAL) to Santarem (STM) ](https://www.expedia.com/lp/flights/sal/stm/san-salvador-to-santarem) - [Meeting of the Waters ](https://www.expedia.com/Meeting-Of-The-Waters-Santarem.d6284226.Vacation-Attraction) - [Port of Santarem ](https://www.expedia.com/Port-Of-Santarem-Santarem.d6284218.Vacation-Attraction) - [Museu Dica Frazao ](https://www.expedia.com/Museu-Dica-Frazao-Santarem.d6284236.Vacation-Attraction) - [Maracana Beach ](https://www.expedia.com/Maracana-Beach-Santarem.d6239217.Vacation-Attraction) - [Paraiso Shopping Center ](https://www.expedia.com/Paraiso-Shopping-Center-Santarem.d6284244.Vacation-Attraction) - [Bosque Santa Lucia ](https://www.expedia.com/Bosque-Santa-Lucia-Santarem.d553248621532465831.Vacation-Attraction) - [Visit Santarém ](https://www.expedia.com/Santarem.dx3285) - [Santarém Vacations ](https://www.expedia.com/Santarem.d3285.Destination-Travel-Guides) - [Alter do Chao Beach ](https://www.expedia.com/Alter-Do-Chao-Beach-Santarem.d553248621532466719.Vacation-Attraction) - [Visit Alter do Chão ](https://www.expedia.com/Alter-Do-Chao.dx6025063) - [Car rentals near Curuá ](https://www.expedia.com/Car-Rentals-In-Curua.d553248634664609365.Car-Rental-Guide) - [Car rentals near Museu Dica Frazao ](https://www.expedia.com/Car-Rentals-In-Museu-Dica-Frazao.d6284236.Car-Rental-Guide) - [Car rentals near Santarém ](https://www.expedia.com/Car-Rentals-In-Santarem.d3285.Car-Rental-Guide) - [Car rentals near Alter do Chão ](https://www.expedia.com/Car-Rentals-In-Alter-Do-Chao.d6025063.Car-Rental-Guide) - [Standard Car Rentals near Monte Alegre Airport ](https://www.expedia.com/Standard-Car-Rentals-In-Monte-Alegre-Airport.d763142318895722496-tStandard.Car-Rental-Guide-Class) - [Surprice Car Rentals Rental Cars in Alter do Chão ](https://www.expedia.com/SurPrice-Car-Rentals-Car-Rentals-In-Alter-Do-Chao.d6025063-c1034.Car-Rental-Guide-Suppliers) - [Interrent Rental Cars in Alter do Chão ](https://www.expedia.com/Interrent-Car-Rentals-In-Alter-Do-Chao.d6025063-c1115.Car-Rental-Guide-Suppliers) - [Localiza Colombia Rental Cars in Alter do Chão ](https://www.expedia.com/Localiza-Colombia-Car-Rentals-In-Alter-Do-Chao.d6025063-c1029.Car-Rental-Guide-Suppliers) - [Car rentals near Port of Santarem ](https://www.expedia.com/Car-Rentals-In-Port-Of-Santarem.d6284218.Car-Rental-Guide) \*Available to One Key members.