Originally Posted by
iluvcf
Asking on behalf of family member. They are a US-British dual citizen. The US passport was sent for renewal and processing has been very slow so they have no passport now except the British one. They also have a valid US passport card in hand. There is upcoming travel to Canada. Could they use British passport to enter Canada by air? Seems they would need a ETA from Canada for the British passport? Would they be able to reenter the US by air without problems? They are considering flying into Buffalo and driving over the border with the passport card to avoid problems but this would be very inconvenient. Would appreciate any advice.
US passport card is not accepted by airlines for international travel. If they need to fly to Canada, easiest is to spend a C$7 (and no more than C$7) to get an ETA on the UK passport. They can also enter Canada by land with the US passport card. To fly into the US by air, a US passport is necessary. I've heard exception being made for US dual citizens abroad to apply for ESTA but presenting themselves as US citizens upon arrival, or USCBP preclearance allowing Americans in Canada to board with a passport card, and this would involve some extra time.