$523 Find Cheap Flights from Redmond to Portugal

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Redmond to Portugal departing on 6/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Flight Deals

Book Cheap Redmond to Portugal Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Redmond to Portugal that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Redmond to Portugal

Sun, Apr 26 - Sun, May 3
KLM Logo
11:35 am - 2:35 pm
RDM
-
LIS
19h 00m
2 stops
KLM Logo
5:00 am - 11:06 pm
LIS
-
RDM
26h 06m
2 stops
$725KLM
Fri, Sep 11 - Sat, Sep 19
Scandinavian Airlines Logo
12:30 pm - 9:00 am
RDM
-
LIS
36h 30m
2 stops
Scandinavian Airlines Logo
4:25 pm - 4:39 pm
LIS
-
RDM
32h 14m
2 stops
$781Scandinavian Airlines
Mon, Apr 20 - Mon, Apr 27
Multiple Airlines Logo
11:35 am - 5:50 pm
RDM
-
LIS
22h 15m
2 stops
Multiple Airlines Logo
3:35 pm - 5:01 pm
LIS
-
RDM
33h 26m
2 stops
$785Multiple Airlines
Tue, Apr 28 - Tue, May 12
United Airlines Logo
5:00 am - 10:45 pm
RDM
-
LIS
33h 45m
2 stops
United Airlines Logo
11:25 am - 8:49 pm
LIS
-
RDM
41h 24m
2 stops
$794United Airlines
Fri, Apr 17 - Wed, Apr 29
KLM Logo
12:33 pm - 6:45 pm
RDM
-
LIS
22h 12m
2 stops
KLM Logo
5:00 am - 5:01 pm
LIS
-
RDM
20h 01m
2 stops
$840KLM
Fri, Apr 17 - Wed, Apr 29
United Airlines Logo
1:55 pm - 10:30 am
RDM
-
LIS
60h 35m
3 stops
United Airlines Logo
5:05 am - 10:59 pm
LIS
-
RDM
25h 54m
2 stops
$851United Airlines
Mon, May 11 - Mon, May 18
Multiple Airlines Logo
12:15 pm - 10:25 pm
RDM
-
LIS
26h 10m
2 stops
Multiple Airlines Logo
3:35 pm - 6:40 pm
LIS
-
RDM
35h 05m
2 stops
$879Multiple Airlines
Sat, Sep 12 - Sat, Sep 19
Scandinavian Airlines Logo
12:30 pm - 9:00 am
RDM
-
LIS
36h 30m
2 stops
Scandinavian Airlines Logo
4:25 pm - 4:39 pm
LIS
-
RDM
32h 14m
2 stops
$901Scandinavian Airlines
Tue, Aug 25 - Tue, Sep 8
United Airlines Logo
9:45 am - 9:20 am
RDM
-
LIS
39h 35m
2 stops
United Airlines Logo
11:25 am - 8:43 pm
LIS
-
RDM
41h 18m
2 stops
$929United Airlines
Tue, Sep 15 - Sat, Sep 19
Scandinavian Airlines Logo
6:20 am - 3:45 pm
RDM
-
LIS
25h 25m
2 stops
Scandinavian Airlines Logo
4:25 pm - 4:39 pm
LIS
-
RDM
32h 14m
2 stops
$936Scandinavian Airlines
Booking Insights

KAYAK's insights & trends for Redmond to Portugal flights

Get data-powered insights and trends into flights from Redmond to Portugal to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Redmond to Portugal?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Redmond to Portugal, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Redmond to Portugal is February, when tickets cost $509 (return) on average. On the other hand, the most expensive months are June and September, when the average cost of round-trip tickets is $1,691 and $1,098 respectively.

Good to know

Low seasonJanuary
Cheapest flight$523
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly and prices are also 9% lower on average.
Flight from Redmond to Lisbon

FAQs - booking Portugal flights

  • How does KAYAK find such low prices on flights from Redmond to Portugal?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Redmond to Portugal.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Redmond to Portugal?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Redmond to Portugal is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Redmond to Portugal?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Redmond to Portugal with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Redmond to Portugal?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Redmond to Portugal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Redmond to Portugal

 
Need help choosing which airline to fly with from Redmond to Portugal? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9514 reviews
7.3Comfort
7.7Boarding
7.1Entertainment
8.1Crew
6.6Food
Airline reviews

The business class seat is exceptional. I wish the food is more palatable.

8.0 ExcellentAnonymous, Mar 2026
LAX - HND
Read more United Airlines reviews

The business class seat is exceptional. I wish the food is more palatable.

Wonderful in-seat entertainment with seatback screens and huge selection of quality movies. The ability to bluetooth connect headphones was amazing.

the entire flight felt off. The crew seemed uninterested and disengaged. The food service was really bad - overcooked, bland, weird food service. They actually woke us up to serve chicken wraps in the middle of the night, after dinner and before breakfast. Made no sense. Ultimately, I was glad they did though, because the breakfast had been held for so long it was inedible. Eggs, potatoes, sausage - all disgusting. We were asked to "honor" the lavatories for premium customers and stay in our own cabin: this was also strange. So people in economy didn't pay enough to use the closest toilet to them??? It's a toilet. All in all, not the experience I have come to expect from United Airlines. The return flight from Paris to SFO was better, btw.

Smooth and easy boarding, comfortable for the entire 5 hour flight, and the seat back entertainment was great! I appreciated all the features, from location info and maps, movies, the ability to connect with Bluetooth headphones, and good selection of movies. Food was good, normal airline snacks (I didn’t purchase anything)

Overall, the flight was good. Lounge access should be with all business class tickets.

They promise free wi-fi prior to boarding and then once on board you are informed you have to purchase wifi even after being a mileagePlus member.

I've been flying American mostly, and it's been very frustrating. This united flight makes me realize maybe the issue isn't flying, but the airline. United was a significantly better experience. The plane was more comfortable, with a normal amount of leg room (vs the ridiculous reductions AA has made), more comfortable seats, screens to watch movies. It was a much better experience!

Awful. No counter attendants. No dinner offered due to delays.

Horrible service no Wi-Fi connection on both leg of the flight and they are refusing to fix bad service

3 hour delay…. Nearly 2 hours sitting on tarmac. Do better, United. Or at least have the sense to not say “we hope you enjoyed your flight with us” upon disembarking.

Everything you need to know for your flight from Redmond to Portugal

Information on your arrival and departure airports