Award flights from Washington Dulles (IAD) to Bilbao (BIO)
Search flights from Washington Dulles (IAD) to Bilbao (BIO)
Search live to see every flight, program and cabin price for your dates.
In the last 30 days AwardTool saw award space on 9 programs for IAD→BIO. Lowest economy: 18,750 miles + $155.70 (Air France/KLM Flying Blue). Lowest business class: 57,500 miles + $64.40 (American Airlines AAdvantage). Lowest first class: 370,500 miles + $35.40 (Delta SkyMiles).
Prices observed – ; newest observation .
Page regenerated from the Oct 19, 2026 data snapshot (normally daily). Summary last changed . Seats change quickly.
Washington Dulles (IAD) to Bilbao (BIO) at a glance
- From
- Washington Dulles International, Washington, D.C., United States (IAD)
- To
- Bilbao Airport, Bilbao, Spain (BIO)
- Programs with award space seen
- 9 of 9 programs tracked on this route
- Nonstop award space seen
- Not seen in the last 30 days
- Airlines seen on these awards
- Eurowings Discover (4Y), American Airlines (AA), Air Canada (AC), Air France (AF), Royal Air Maroc (AT), ITA Airways (AZ), British Airways (BA), Delta Air Lines (DL), Aer Lingus (EI), Air Dolomiti (EN), Eurowings (EW), IBERIA (IB) and 12 more
- Departures with open awards
- Oct 2026 to Aug 2027
- Most dates with space
- 25 of 35 departure dates checked (American Airlines AAdvantage, economy)
- Latest departure with space
- Observation window
- Awards observed in the last 30 days
- Destination guide
- Award flights to Bilbao (BIO)
Compare programs by cabin
The lowest one-way award each program showed in each cabin, sorted by points.
Economy
| Program | Points + taxes | Stops | Airlines seen | Seats | Dates seen | Newest observation | |
|---|---|---|---|---|---|---|---|
| Air France/KLM Flying BlueLowest observed | 18,750 pts + $155.70 | 1 stop | Air France (AF), Delta Air Lines (DL), KLM (KL), Air Europa (UX) +1 more | 9+ | 21 | See dates | |
| American Airlines AAdvantage | 22,500 pts + $9.00 | 1 stop | American Airlines (AA), Royal Air Maroc (AT), British Airways (BA), Aer Lingus (EI) +1 more | — | 25 | See dates | |
| TAP Air Portugal Miles&Go | 28,000 pts + $84.49 | 1 stop | TAP Portugal (TP) | 8 | 9 | See dates | |
| Qantas Frequent Flyer | 34,700 pts + $105.80 | 1 stop | American Airlines (AA), Air France (AF), Royal Air Maroc (AT), British Airways (BA) +1 more | 2 | 11 | See dates | |
| United MileagePlus | 40,000 pts + $5.60 | 1 stop | Eurowings Discover (4Y), Air Canada (AC), ITA Airways (AZ), Aer Lingus (EI) +11 more | 9+ | 24 | See dates | |
| Air Canada Aeroplan | 40,000 pts + $75.71 | 1 stop | Air Canada (AC), Air Dolomiti (EN), Lufthansa (LH), SWISS (LX) +4 more | 9+ | 15 | See dates | |
| Avianca LifeMiles | 40,000 pts + $48.10 | 1 stop | Lufthansa (LH), SWISS (LX), Brussels Airlines (SN), United Airlines (UA) | 9+ | 6 | See dates | |
| Delta SkyMiles | 40,600 pts + $36.00 | 1 stop | Air France (AF), Delta Air Lines (DL), KLM (KL) | 9+ | 19 | See dates | |
| Turkish Miles & Smiles | 55,000 pts + taxes not reported | 1 stop | Turkish Airlines (TK) | 1 | 22 | See dates |
Premium Economy
| Program | Points + taxes | Stops | Airlines seen | Seats | Dates seen | Newest observation | |
|---|---|---|---|---|---|---|---|
| Air France/KLM Flying BlueLowest observed | 40,000 pts + $247.50 | 1 stop | Air France (AF), Delta Air Lines (DL), KLM (KL), Air Europa (UX) | 9+ | 21 | See dates | |
| American Airlines AAdvantage | 40,000 pts + $59.20 | 2 stops | American Airlines (AA), Royal Air Maroc (AT), British Airways (BA), IBERIA (IB) | — | 11 | See dates | |
| United MileagePlus | 55,000 pts + $50.40 | 1 stop | ITA Airways (AZ), Aer Lingus (EI), Air Dolomiti (EN), Eurowings (EW) +6 more | 9+ | 20 | See dates | |
| Qantas Frequent Flyer | 78,900 pts + $117.70 | 2 stops | American Airlines (AA), Air France (AF), British Airways (BA), IBERIA (IB) | 1 | 5 | See dates | |
| Air Canada Aeroplan | 94,341 pts + $154.11 | 2 stops | Air Canada (AC), Lufthansa (LH), SWISS (LX), United Airlines (UA) | 7 | 10 | See dates |
Not seen in premium economy: Avianca LifeMiles, Delta SkyMiles, Turkish Miles & Smiles and TAP Air Portugal Miles&Go.
Business Class
| Program | Points + taxes | Stops | Airlines seen | Seats | Dates seen | Newest observation | |
|---|---|---|---|---|---|---|---|
| American Airlines AAdvantageLowest observed | 57,500 pts + $64.40 | 2 stops | American Airlines (AA), British Airways (BA), IBERIA (IB) | — | 9 | See dates | |
| Air Canada Aeroplan | 75,000 pts + $121.81Mixed cabin | 2 stops | Air Canada (AC), Lufthansa (LH), SWISS (LX), United Airlines (UA) | 9+ | 9 | See dates | |
| United MileagePlus | 88,000 pts + $28.80 | 1 stop | ITA Airways (AZ), Aer Lingus (EI), Air Dolomiti (EN), Eurowings (EW) +7 more | 4 | 24 | See dates | |
| Qantas Frequent Flyer | 90,000 pts + $494.50 | 1 stop | Air France (AF), Royal Air Maroc (AT), British Airways (BA), IBERIA (IB) | 2 | 6 | See dates | |
| Air France/KLM Flying Blue | 127,500 pts + $362.20 | 1 stop | Air France (AF), Delta Air Lines (DL), KLM (KL), Air Europa (UX) | 7 | 21 | See dates | |
| Turkish Miles & Smiles | 175,000 pts + taxes not reported | 1 stop | Turkish Airlines (TK) | 1 | 21 | See dates | |
| Delta SkyMiles | 370,500 pts + $24.10 | 1 stop | Air France (AF), Delta Air Lines (DL) | 7 | 5 | See dates | |
| TAP Air Portugal Miles&Go | 432,500 pts + $86.54 | 1 stop | TAP Portugal (TP) | 5 | 9 | See dates |
Not seen in business class: Avianca LifeMiles.
First Class
| Program | Points + taxes | Stops | Airlines seen | Seats | Dates seen | Newest observation | |
|---|---|---|---|---|---|---|---|
| Delta SkyMiles | 370,500 pts + $35.40 | 2 stops | Air France (AF), Delta Air Lines (DL), KLM (KL) | 6 | 5 | See dates |
Not seen in first class: American Airlines AAdvantage, Air Canada Aeroplan, Avianca LifeMiles, Air France/KLM Flying Blue, Qantas Frequent Flyer, Turkish Miles & Smiles, TAP Air Portugal Miles&Go and United MileagePlus.
Not seen means AwardTool hasn't observed this cabin on this route in the last 30 days. It doesn't mean the airline has no seats. Dates seen counts departure dates with an open award in that cabin at any price; newest observation is the latest time AwardTool saw one of them. Seats is the count the program reported when we observed it; some programs report at most 9.
Observed award examples
| Departure | Cabin | Program | Points + taxes | Seats | Stops | Observed (UTC) | |
|---|---|---|---|---|---|---|---|
| Economy | American Airlines AAdvantage | 22,500 pts + $67.70 | — | 2 stops | Check this date | ||
| Economy | Qantas Frequent Flyer | 34,700 pts + $395.70 | 4 | 1 stop | Check this date | ||
| Premium Economy | American Airlines AAdvantage | 40,000 pts + $59.20 | — | 2 stops | Check this date | ||
| Business | United MileagePlus | 88,000 pts + $55.00 | 5 | 2 stops | Check this date | ||
| Business | Air France/KLM Flying Blue | 129,500 pts + $358.60 | 4 | 1 stop | Check this date | ||
| Business | Turkish Miles & Smiles | 175,000 pts + taxes not reported | 1 | 1 stop | Check this date | ||
| Business | TAP Air Portugal Miles&Go | 432,500 pts + $86.54 | 5 | 1 stop | Check this date | ||
| Business | Air Canada Aeroplan | 485,004 pts + $123.41 | 6 | 2 stops | Check this date |
Prices are one-way per traveler: the program's points or miles plus taxes and carrier fees in USD, as AwardTool observed them in the observation window. Award space changes constantly. A seat we saw may be gone, and space we haven't seen may exist. Always confirm with a live search before transferring points; most transfers can't be reversed.
Best months to fly from Washington Dulles (IAD) to Bilbao (BIO) on points
| Month | Economy | Premium Economy | Business | First |
|---|---|---|---|---|
| 25,000 · Flying Blue (1 date) | 62,500 · Flying Blue (1 date) | 57,500 · AAdvantage (1 date) | — | |
| 22,500 · AAdvantage (3 dates) | 40,000 · AAdvantage (1 date) | 57,500 · AAdvantage (1 date) | — | |
| 64,500 · Flying Blue (1 date) | 339,500 · Flying Blue (1 date) | 175,000 · Miles&Smiles (1 date) | — | |
| 18,750 · Flying Blue (1 date) | 40,000 · AAdvantage (1 date) | 57,500 · AAdvantage (1 date) | 610,500 · SkyMiles (1 date) | |
| 22,500 · AAdvantage (2 dates) | 40,000 · AAdvantage (1 date) | — | — | |
| 25,000 · Flying Blue (2 dates) | 40,000 · AAdvantage (4 dates) | 57,500 · AAdvantage (2 dates) | 395,500 · SkyMiles (1 date) | |
| 25,000 · Flying Blue (7 dates) | 40,000 · AAdvantage (1 date) | 57,500 · AAdvantage (1 date) | 390,500 · SkyMiles (2 dates) | |
| 30,000 · AAdvantage (1 date) | — | — | — | |
| 25,000 · Flying Blue (7 dates) | 40,000 · AAdvantage (3 dates) | 57,500 · AAdvantage (3 dates) | 370,500 · SkyMiles (1 date) |
Points that transfer to these programs
| Program | Amex | Bilt | Capital One | Chase | Citi | Wells Fargo |
|---|---|---|---|---|---|---|
| Air Canada Aeroplan | 1:1 · Instant | 1:1 · Instant | 1:1 · Instant | 1:1 · Instant | — | — |
| Air France/KLM Flying Blue | 1:1 · Instant | 1:1 · Instant | 1:1 · Instant | 1:1 · Instant | 1:1 · Instant | 1:1 · Instant |
| American Airlines AAdvantage | — | — | — | — | 1:1 · Instant | — |
| Avianca LifeMiles | 1:1 · Instant | 1:1 · Instant | 1:1 · Instant | — | 1:1 · Instant | 1:1 · Instant |
| Delta SkyMiles | 1:1 · Instant | — | — | — | — | — |
| Qantas Frequent Flyer | 1:1 · Instant | — | 1:1 · ~1-2 days | — | 1:1 · Instant | — |
| TAP Air Portugal Miles&Go | — | 1:1 · Instant | 1:1 · Instant | — | — | — |
| Turkish Miles & Smiles | — | 1:1 · Instant | 1:1 · Instant | — | 1:1 · ~1 day | — |
| United MileagePlus | — | 1:1 · Instant | — | 1:1 · Instant | — | — |
Check current transfer bonuses. Most transfers can't be reversed.
Search, calendar and alerts from Washington Dulles (IAD) to Bilbao (BIO)
Route calendar
Every departure date with open award seats on IAD→BIO for United MileagePlus and the other programs: a limited window on the free plan and 365 days with Pro.
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Search Washington Dulles (IAD) to Bilbao (BIO)How many miles you need from Washington Dulles (IAD) to Bilbao (BIO)
- In economy, Air France/KLM Flying Blue had the lowest observed award, 18,750 miles + $155.70; see how many miles you need with Air France/KLM Flying Blue.
- In premium economy, Air France/KLM Flying Blue had the lowest observed award, 40,000 miles + $247.50; see how many miles you need with Air France/KLM Flying Blue.
- In business class, American Airlines AAdvantage had the lowest observed award, 57,500 miles + $64.40; see how many miles you need with American Airlines AAdvantage.
- In first class, Delta SkyMiles had the lowest observed award, 370,500 miles + $35.40; see how many miles you need with Delta SkyMiles.
Questions about award flights from Washington Dulles (IAD) to Bilbao (BIO)
What's the lowest Washington Dulles (IAD) to Bilbao (BIO) award price AwardTool has seen?
In economy, 18,750 miles + $155.70 with Air France/KLM Flying Blue. Air France/KLM Flying Blue showed economy award space on 21 departure dates at any price (newest observation Oct 17, 2026, 02:09 UTC). In business class, 57,500 miles + $64.40 with American Airlines AAdvantage. Seen Oct 18, 2026, 02:10 UTC for an Oct 27, 2026 departure. American Airlines AAdvantage showed business-class award space on 9 departure dates at any price (newest observation Oct 18, 2026, 02:10 UTC). Search live before transferring points.
Which loyalty programs had award space from Washington Dulles (IAD) to Bilbao (BIO)?
9 programs in the last 30 days: American Airlines AAdvantage (economy 25 dates, premium economy 11 dates, business class 9 dates); Air Canada Aeroplan (economy 15 dates, premium economy 10 dates, business class 9 dates); Avianca LifeMiles (economy 6 dates); Delta SkyMiles (economy 19 dates, business class 5 dates, first class 5 dates); Air France/KLM Flying Blue (economy 21 dates, premium economy 21 dates, business class 21 dates); Qantas Frequent Flyer (economy 11 dates, premium economy 5 dates, business class 6 dates); Turkish Miles & Smiles (economy 22 dates, business class 21 dates); TAP Air Portugal Miles&Go (economy 9 dates, business class 9 dates) and 1 more. Dates count departure dates with an open award.
Is there nonstop award space from Washington Dulles (IAD) to Bilbao (BIO)?
AwardTool hasn't observed nonstop award space on this route in the last 30 days. The awards it saw connected with 1 to 2 stops on itineraries including Eurowings Discover, American Airlines, Air Canada and Air France. That doesn't mean nonstop space never appears.
Which credit card points can book awards from Washington Dulles (IAD) to Bilbao (BIO)?
American Express Membership Rewards: Air Canada Aeroplan (1:1), Avianca LifeMiles (1:1), Delta SkyMiles (1:1), Air France/KLM Flying Blue (1:1), Qantas Frequent Flyer (1:1). Bilt Rewards: Air Canada Aeroplan (1:1), Avianca LifeMiles (1:1), Air France/KLM Flying Blue (1:1), Turkish Miles & Smiles (1:1), TAP Air Portugal Miles&Go (1:1), United MileagePlus (1:1). Capital One Miles: Air Canada Aeroplan (1:1), Avianca LifeMiles (1:1), Air France/KLM Flying Blue (1:1), Qantas Frequent Flyer (1:1), Turkish Miles & Smiles (1:1), TAP Air Portugal Miles&Go (1:1). Chase Ultimate Rewards: Air Canada Aeroplan (1:1), Air France/KLM Flying Blue (1:1), United MileagePlus (1:1). Citi ThankYou Points: American Airlines AAdvantage (1:1), Avianca LifeMiles (1:1), Air France/KLM Flying Blue (1:1), Qantas Frequent Flyer (1:1), Turkish Miles & Smiles (1:1). Wells Fargo Rewards: Avianca LifeMiles (1:1), Air France/KLM Flying Blue (1:1). Ratios come from AwardTool's transfer partner list; check current bonuses first.
Which months had the lowest award prices from Washington Dulles (IAD) to Bilbao (BIO)?
Counting only month prices from programs with award space on 2 or more dates that month, and leaving out unusually low outliers: in economy, the lowest award was for Nov 2026 departures, 22,500 miles with AAdvantage (3 dates); in business class, the lowest award was for Aug 2027 departures, 57,500 miles with AAdvantage (3 dates). The month table shows every lowest price, including those. Based on dates we observed, not a forecast.