Delta Air Lines (in partnership with Air France and KLM) has opened ticket sales for the San Francisco – Bilbao, Spain route. Prices start at $708 for Basic Economy and $948 for Regular Economy roundtrip, including all taxes. The offer is valid as of the source publication date — October 17, 2026 — but fares may vary depending on travel dates and routing.

What's included in the fare

The $708 Basic Economy fare is the cheapest option but comes with restrictions: you typically can't select a seat in advance, baggage is not included (only a small carry-on), and changes may incur fees. The $948 Regular Economy fare includes seat selection, a standard carry-on, and one checked bag. The $240 difference may be worth it if you're traveling with a suitcase or want to sit with companions.

Note that Delta operates these flights in partnership with Air France and KLM, so the actual carrier may be different, and the route may involve a connection. This can affect baggage rules and change policies. Check the flight details carefully on the airline's website before purchasing.

Which cards Delta accepts

Delta accepts major international cards: Visa, Mastercard, American Express, Discover. However, when paying with a card issued outside the US, you may encounter issues: some foreign cards are declined due to regional restrictions or the airline's security settings. Additionally, when paying in US dollars with a card in another currency, your issuing bank may charge a conversion fee (typically 1–3%).

Virtual cards like VirtCardPay, issued in US dollars, help avoid double conversion and are suitable for payments on foreign airline websites. Make sure the card is active and has sufficient funds.

How to pay for a ticket with a virtual card: step by step

  1. Select your flight on Delta's website. Go to delta.com, enter the route San Francisco (SFO) – Bilbao (BIO), dates, and number of passengers. The system will show available fares.
  2. Check the total price. At the booking stage, ensure the price matches the advertised fare (around $708 or $948) and consider any fees for baggage or seat selection.
  3. Enter your virtual card details. On the payment page, enter the card number, expiry date, CVV, and cardholder name. Make sure the card is active and has sufficient funds.
  4. Confirm the payment. After the funds are charged, you'll receive a booking confirmation by email. Save it.

If the payment fails, check:

  • whether there are enough funds on the card (including possible conversion fees);
  • whether the card is active and not expired;
  • whether the details are entered correctly (number, CVV, name);
  • whether your bank is blocking the transaction (contact support).

Sometimes airlines decline payments from cards issued in certain regions. In this case, try using a card from another bank or contact Delta support.

How much to keep on the balance

We recommend keeping 10–15% more than the ticket price on your virtual card to cover possible conversion fees or unexpected charges. For example, for a $948 ticket, you should have at least $1050–1100 on the card. This helps avoid declines due to insufficient funds.

What to do if a payment is declined

If the payment doesn't go through, don't panic. First, check your balance and card details. If everything is correct, call Delta support or your bank. Sometimes retrying after a while or using a different card helps. You can also try paying via PayPal if the airline offers that option.

FAQ

Can I pay for a Delta ticket with a VirtCardPay virtual card?

Yes, VirtCardPay virtual cards issued in US dollars are suitable for payments on Delta's website. Make sure the card is active and has sufficient funds.

Is there a fee for paying in US dollars with a card in another currency?

Yes, your issuing bank may charge a conversion fee (typically 1–3%). Virtual cards in US dollars help avoid this fee.

What should I do if the payment is declined?

Check your balance and data accuracy, contact Delta support or your bank. Try another card or retry later.

Service names, games, and franchises are the property of their respective owners and are mentioned only to describe the payment scenario; VirtCardPay is not affiliated with them.

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Sources

This material is for informational purposes only and is not financial advice. Data and service terms may change, so check primary sources before making a payment or investment decision. Mentions of third-party brands and services do not imply official partnership, support, or endorsement by VirtCardPay; partner platforms are marked with a “Partner” badge.
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