$354 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 9/27. 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

Tue, Aug 25 - Wed, Sep 30
Multiple Airlines Logo
5:24 pm - 11:00 pm
RDM
-
LIS
21h 36m
2 stops
Multiple Airlines Logo
7:20 am - 11:58 pm
LIS
-
RDM
24h 38m
2 stops
$791Multiple Airlines
Sat, Nov 21 - Wed, Dec 2
United Airlines Logo
1:55 pm - 11:00 am
RDM
-
LIS
37h 05m
2 stops
United Airlines Logo
12:25 pm - 10:54 pm
LIS
-
RDM
42h 29m
2 stops
$810United Airlines
Sat, Sep 26 - Fri, Oct 2
United Airlines Logo
7:00 pm - 9:20 am
RDM
-
LIS
30h 20m
2 stops
United Airlines Logo
11:25 am - 10:27 pm
LIS
-
RDM
43h 02m
2 stops
$833United Airlines
Sat, Oct 17 - Sat, Oct 24
United Airlines Logo
7:00 pm - 9:20 am
RDM
-
LIS
30h 20m
3 stops
United Airlines Logo
1:00 pm - 9:20 pm
LIS
-
RDM
40h 20m
2 stops
$842United Airlines
Fri, Sep 25 - Fri, Oct 2
United Airlines Logo
7:00 pm - 11:05 am
RDM
-
LIS
56h 05m
2 stops
United Airlines Logo
11:25 am - 9:02 pm
LIS
-
RDM
41h 37m
2 stops
$844United Airlines
Sat, Oct 17 - Sat, Oct 24
United Airlines Logo
7:00 pm - 11:05 am
RDM
-
LIS
32h 05m
2 stops
United Airlines Logo
1:00 pm - 10:54 pm
LIS
-
RDM
41h 54m
2 stops
$847United Airlines
Wed, Nov 18 - Sun, Nov 29
United Airlines Logo
5:30 am - 10:15 am
RDM
-
LIS
20h 45m
2 stops
United Airlines Logo
1:00 pm - 10:54 pm
LIS
-
RDM
41h 54m
2 stops
$866United Airlines
Tue, Aug 25 - Wed, Sep 30
United Airlines Logo
9:35 am - 9:20 am
RDM
-
LIS
39h 45m
3 stops
United Airlines Logo
11:25 am - 5:57 pm
LIS
-
RDM
38h 32m
2 stops
$906United Airlines
Sat, Aug 22 - Wed, Sep 30
United Airlines Logo
1:52 pm - 9:20 am
RDM
-
LIS
35h 28m
2 stops
United Airlines Logo
11:25 am - 5:57 pm
LIS
-
RDM
38h 32m
2 stops
$929United Airlines
Sun, Aug 23 - Wed, Sep 30
United Airlines Logo
5:00 am - 9:20 am
RDM
-
LIS
20h 20m
2 stops
United Airlines Logo
6:15 am - 10:27 pm
LIS
-
RDM
24h 12m
2 stops
$939United 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 $479 (return) on average. On the other hand, the most expensive months are June and September, when the average cost of round-trip tickets is $1,181 and $874 respectively.

Good to know

Low seasonJanuary
Cheapest flight$354
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly and prices are also 7% 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 9766 reviews
7.3Comfort
7.1Entertainment
6.6Food
8.1Crew
7.7Boarding
Airline reviews

These airplanes should be illegal. The seats are two tight, it is a safety issue. Wheelchair support was ridiculously slow. We almost missed our flight.

4.0 OkayDenis, May 2026
SAV - ORD
Read more United Airlines reviews

These airplanes should be illegal. The seats are two tight, it is a safety issue. Wheelchair support was ridiculously slow. We almost missed our flight.

It was a short flight so I was expecting too much

Horrifying Almost 2 million miles. Bring your own food and drink. One coffee or drink every three hours. Have to order meals on app more than 24 hours ahead Tiny and dirty bathrooms

Flight was delayed but more than 90 minutes. This caused me to miss my available windows for pick-up by a friend. I had to pay $125 for an uber back home from the airport which was an added expense that I had not budgeted for my trip. Staff was friendly.

I felt scammed. The priced advertised was different than what I paid. I paid the whole some online. I then got a call 20 minutes later saying I need to paid 70 more person. She said the price online is not the guaranteed price.

Seat pitch is horrible especially on the 15 hour flight. Gate crew at SFO was Outstanding. The flight crew was also great.

Easy of boarding, helpfully staff at check in, surprisingly comfortable seating

Check in was chaotic with only one counter for business class and first class. The luggage conveyor belt at JFK airport was broken so the flight departure was delayed which made the flight stressful as I had a tight connection. Although the captain said they could make up the delay, they didn’t do so.

Had a one hour delay due to mechanical issue. I didn’t think I’d be able to make my connecting flight, but they waited for me and greeted me when I arrived to help things run smooth.

Lost of requested seat assignments. Lost my husband's meal choice

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

Information on your arrival and departure airports