Just in case there's nothing healthful or satisfying to eat on you next flight, these make-ahead sandwiches travel well.
Combine tuna and diced celery in a bowl, and toss gently. Combine salad dressing, lemon juice, and dill, stirring well. Add to tuna mixture, tossing gently.
Trim crusts from bread; flatten each slice of bread to 1/8-inch thickness using a rolling pin. Spread 2 tablespoons tuna mixture evenly over each slice. Roll up; wrap in plastic wrap. Chill.
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